<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:0155d4e5-1770-4664-8573-f08dedff15d9,g:f673a60e-6191-4049-88a7-b033a0af7b5a-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CoverPage" xlink:type="simple" xlink:href="eri-20200930.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CoverPage" xlink:type="extended" id="i9e2781374e7a44c4abf4ea38eb45f6dd_CoverPage"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDBALANCESHEETS" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDBALANCESHEETS" xlink:type="extended" id="i2cdcebcb453d432bb8fbea42e3d56475_CONSOLIDATEDCONDENSEDBALANCESHEETS"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDBALANCESHEETSParenthetical" xlink:type="extended" id="i4517e95682574d48b346115914038754_CONSOLIDATEDCONDENSEDBALANCESHEETSParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_31a066b4-30a0-4c21-8fa3-8a36f3011079" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_31a066b4-30a0-4c21-8fa3-8a36f3011079" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_f0038729-0587-4b85-b1c5-32f7f3934249" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_f0038729-0587-4b85-b1c5-32f7f3934249" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2ca46e43-9850-437b-862a-8ca407ae9a5e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_2ca46e43-9850-437b-862a-8ca407ae9a5e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_79b384d0-1129-438e-a8db-a7ddd48c3b04" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_79b384d0-1129-438e-a8db-a7ddd48c3b04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_2ae382ea-c294-4665-a5e8-4b9ebd6b908f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_AccountsPayableCurrent_2ae382ea-c294-4665-a5e8-4b9ebd6b908f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_47f795d6-4d8b-453c-b019-25a26526f2b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_47f795d6-4d8b-453c-b019-25a26526f2b8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_fc9ebd6a-f592-4f5a-a25f-47389448c1ad" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_fc9ebd6a-f592-4f5a-a25f-47389448c1ad" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_8c4be624-e65d-437c-a94f-f45a81386d78" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_cb4fa9b5-7299-4fd4-8db5-496656e52b1a" xlink:to="loc_us-gaap_StatementTable_8c4be624-e65d-437c-a94f-f45a81386d78" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8c4be624-e65d-437c-a94f-f45a81386d78" xlink:to="loc_srt_ConsolidatedEntitiesAxis_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4" xlink:to="loc_srt_ConsolidatedEntitiesDomain_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_ab8f7525-ff3c-4a97-bda4-5284b4f07c6e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_fa78d218-4fd0-47a6-b3c2-ca579d8f68c4" xlink:to="loc_srt_ConsolidatedEntitiesDomain_ab8f7525-ff3c-4a97-bda4-5284b4f07c6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_cd76ad50-b950-4bec-9854-e0ae3e7bc373" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_ab8f7525-ff3c-4a97-bda4-5284b4f07c6e" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_cd76ad50-b950-4bec-9854-e0ae3e7bc373" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFOPERATIONS" xlink:type="extended" id="i088599237a874109ba09764bc3781c6a_CONSOLIDATEDCONDENSEDSTATEMENTSOFOPERATIONS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_2410b4ed-2bf1-4dbf-9ce4-53226e648c34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_RevenuesAbstract_2410b4ed-2bf1-4dbf-9ce4-53226e648c34" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e1e0588d-ce14-4dc0-be28-3e9f771141d2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_2410b4ed-2bf1-4dbf-9ce4-53226e648c34" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e1e0588d-ce14-4dc0-be28-3e9f771141d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_f8730529-53df-430a-ba64-93e7379b4468" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_f8730529-53df-430a-ba64-93e7379b4468" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_7c301dc6-2e99-4447-9bce-45217f799390" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_7c301dc6-2e99-4447-9bce-45217f799390" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_6098f4c7-831f-48d7-8a09-63fa1a39f917" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_6098f4c7-831f-48d7-8a09-63fa1a39f917" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CorporateExpense_c8aef970-f6af-4757-81ae-6e599b9e3b3d" xlink:href="eri-20200930.xsd#eri_CorporateExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_eri_CorporateExpense_c8aef970-f6af-4757-81ae-6e599b9e3b3d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_6f5fdeee-1fcd-496c-bf39-8ec2340c75c1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_AssetImpairmentCharges_6f5fdeee-1fcd-496c-bf39-8ec2340c75c1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_4f2633a5-de4a-4aaa-bddc-8201d9bc336f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_DepreciationAndAmortization_4f2633a5-de4a-4aaa-bddc-8201d9bc336f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_4a9459be-24a6-4134-ae5f-ec12953a3195" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_4a9459be-24a6-4134-ae5f-ec12953a3195" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_624024d4-62fe-4d9a-a906-c9e766106dc3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_8820b6fe-503d-41ef-96e4-b59307ef1f70" xlink:to="loc_us-gaap_CostsAndExpenses_624024d4-62fe-4d9a-a906-c9e766106dc3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_37180004-9523-44cd-8c30-baa3e06395b2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_OperatingIncomeLoss_37180004-9523-44cd-8c30-baa3e06395b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_b220f262-ab2c-4aff-b70b-76c98555d7ab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:to="loc_us-gaap_InterestExpense_b220f262-ab2c-4aff-b70b-76c98555d7ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_e82ae144-3fd6-4fcc-86bf-c95f33560729" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_e82ae144-3fd6-4fcc-86bf-c95f33560729" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_5d6046af-77a8-4727-9c57-5bbbbd370459" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_5d6046af-77a8-4727-9c57-5bbbbd370459" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_d8c5f2d4-ecda-4fb2-ab81-b0b4f9b5720e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_fc8d9909-38d9-4e1d-b41e-06b383ae2d3b" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_d8c5f2d4-ecda-4fb2-ab81-b0b4f9b5720e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_eec5b6c1-7798-47d6-be09-74d2390a591d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_eec5b6c1-7798-47d6-be09-74d2390a591d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_febd713f-f97c-422a-b579-4f56d27f012c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_febd713f-f97c-422a-b579-4f56d27f012c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_4cd22554-7888-4b64-ba54-7e9b95e18014" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_4cd22554-7888-4b64-ba54-7e9b95e18014" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_2c3176ce-da1f-4c26-a5d7-8e69c006c1bc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_2c3176ce-da1f-4c26-a5d7-8e69c006c1bc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_531085b7-e23a-4671-aa6a-eff92599e101" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_ProfitLoss_531085b7-e23a-4671-aa6a-eff92599e101" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a32c775b-9211-4db7-b06d-d7d5adbf4608" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a32c775b-9211-4db7-b06d-d7d5adbf4608" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_b2e768c1-3284-4549-b9c3-82bffd345e4e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_NetIncomeLoss_b2e768c1-3284-4549-b9c3-82bffd345e4e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_2ca5462d-5cff-46c4-b6b2-afb79fb87339" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_2ca5462d-5cff-46c4-b6b2-afb79fb87339" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_e238b750-eb83-4656-8d7d-9c6306728b46" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_2ca5462d-5cff-46c4-b6b2-afb79fb87339" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_e238b750-eb83-4656-8d7d-9c6306728b46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_73b65937-fcf0-4f2b-b4e1-3f8dd21776d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_2ca5462d-5cff-46c4-b6b2-afb79fb87339" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_73b65937-fcf0-4f2b-b4e1-3f8dd21776d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_84a5cd8d-76fa-4667-a905-2e9dcf0e5194" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_2ca5462d-5cff-46c4-b6b2-afb79fb87339" xlink:to="loc_us-gaap_EarningsPerShareBasic_84a5cd8d-76fa-4667-a905-2e9dcf0e5194" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_2b9e2433-68f2-48a5-bb87-3846cde50cdf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_2b9e2433-68f2-48a5-bb87-3846cde50cdf" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_14241979-5d6b-4ea4-91ba-ca35ae8425d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_2b9e2433-68f2-48a5-bb87-3846cde50cdf" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_14241979-5d6b-4ea4-91ba-ca35ae8425d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_99c79b41-bc78-4ae2-9a0a-bcd4153ca8f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_2b9e2433-68f2-48a5-bb87-3846cde50cdf" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_99c79b41-bc78-4ae2-9a0a-bcd4153ca8f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_17fc937a-13f9-4bf2-a541-498a0aa4448e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_2b9e2433-68f2-48a5-bb87-3846cde50cdf" xlink:to="loc_us-gaap_EarningsPerShareDiluted_17fc937a-13f9-4bf2-a541-498a0aa4448e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_05b142b9-a45a-4006-b432-11be9791386d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_05b142b9-a45a-4006-b432-11be9791386d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_c98a641c-e7d4-44dc-bae9-a984cd1b6ea7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_05b142b9-a45a-4006-b432-11be9791386d" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_c98a641c-e7d4-44dc-bae9-a984cd1b6ea7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_83ad4389-ee59-454c-b61a-9e24e93dff3c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_05b142b9-a45a-4006-b432-11be9791386d" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_83ad4389-ee59-454c-b61a-9e24e93dff3c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_5e9359f4-61bc-47f8-92ac-168bf8121625" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_5cffa455-0349-4275-8866-0e0e7522b907" xlink:to="loc_us-gaap_StatementTable_5e9359f4-61bc-47f8-92ac-168bf8121625" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_5e9359f4-61bc-47f8-92ac-168bf8121625" xlink:to="loc_srt_ProductOrServiceAxis_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d" xlink:to="loc_srt_ProductsAndServicesDomain_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_9b54cbb7-d1b0-4f0f-bbb8-c7747b4de56d" xlink:to="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CasinoAndPariMutuelCommissionsMember_34ebb8d9-d261-4602-bd59-6a452b0b9e8a" xlink:href="eri-20200930.xsd#eri_CasinoAndPariMutuelCommissionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:to="loc_eri_CasinoAndPariMutuelCommissionsMember_34ebb8d9-d261-4602-bd59-6a452b0b9e8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageMember_70479f51-d84b-4ab7-8d49-f270996bd593" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FoodAndBeverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:to="loc_us-gaap_FoodAndBeverageMember_70479f51-d84b-4ab7-8d49-f270996bd593" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HotelOwnedMember_8a1c81d0-25ad-4a88-ab9d-184dfa0d80a2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HotelOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:to="loc_us-gaap_HotelOwnedMember_8a1c81d0-25ad-4a88-ab9d-184dfa0d80a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_b43e8159-41bd-445c-9a7b-0cbccdd13a6d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_b43e8159-41bd-445c-9a7b-0cbccdd13a6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagementFeesMember_a43aa85f-31e1-4b76-9e32-8dea8d0ed1dc" xlink:href="eri-20200930.xsd#eri_ManagementFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a64c8c1e-10c7-4e24-bffb-434b3af40b84" xlink:to="loc_eri_ManagementFeesMember_a43aa85f-31e1-4b76-9e32-8dea8d0ed1dc" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME" xlink:type="extended" id="i13147ceec1ca4d708a67f3b89d89be7a_CONSOLIDATEDCONDENSEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended" id="i4fba7e68e4014f66b5794554665d3954_CONSOLIDATEDCONDENSEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_fa8c2731-b777-48e3-8787-b150c01e66e7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_SharesIssued_fa8c2731-b777-48e3-8787-b150c01e66e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_421f703d-9f38-45ce-9be7-87e8c7d7224a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_421f703d-9f38-45ce-9be7-87e8c7d7224a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_c805d9f4-8b3c-4003-bfe9-3e51a8bc544f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_c805d9f4-8b3c-4003-bfe9-3e51a8bc544f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_2452f223-9d24-413c-a1c4-a2523b5cc931" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_2452f223-9d24-413c-a1c4-a2523b5cc931" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_c0e98e50-c0b5-4726-90d5-73c187d93a39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_c0e98e50-c0b5-4726-90d5-73c187d93a39" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_a6df1afa-03c9-4d75-963f-8b8f8828c4f6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_a6df1afa-03c9-4d75-963f-8b8f8828c4f6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_1f734f7f-0fc8-4bc4-b7b6-c7994be88fdf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_1f734f7f-0fc8-4bc4-b7b6-c7994be88fdf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_9d75ee47-5486-443e-a9ea-24f505212317" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_ProfitLoss_9d75ee47-5486-443e-a9ea-24f505212317" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_05c40286-2a5b-466f-937a-154cd158c9c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_05c40286-2a5b-466f-937a-154cd158c9c6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_e1c2b68d-72e8-4ab4-9736-121b45314fcc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_e1c2b68d-72e8-4ab4-9736-121b45314fcc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedPaymentArrangementReplacementAwards_0e4e841a-3889-4b39-9f0a-09a869cfa177" xlink:href="eri-20200930.xsd#eri_ShareBasedPaymentArrangementReplacementAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_eri_ShareBasedPaymentArrangementReplacementAwards_0e4e841a-3889-4b39-9f0a-09a869cfa177" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_eda04638-6dd7-4fb7-a376-4048ece683a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_eda04638-6dd7-4fb7-a376-4048ece683a7" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SharesWithheldRelatedToSettlementOfStockAwards_68e37106-29ba-44eb-8a0e-5e9efac6a8f0" xlink:href="eri-20200930.xsd#eri_SharesWithheldRelatedToSettlementOfStockAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_eri_SharesWithheldRelatedToSettlementOfStockAwards_68e37106-29ba-44eb-8a0e-5e9efac6a8f0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SharesWithheldRelatedToSettlementOfStockAwardsValue_0e108361-c5ef-4378-91e4-bab863640d92" xlink:href="eri-20200930.xsd#eri_SharesWithheldRelatedToSettlementOfStockAwardsValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_eri_SharesWithheldRelatedToSettlementOfStockAwardsValue_0e108361-c5ef-4378-91e4-bab863640d92" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination_120699e8-29a8-446d-b532-49cac4446f17" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination_120699e8-29a8-446d-b532-49cac4446f17" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_4d286bdb-dd14-4dc6-aaf2-6b2bc9f3da66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StockholdersEquityOther_4d286bdb-dd14-4dc6-aaf2-6b2bc9f3da66" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_6301c07d-d00e-4e21-9df0-3d0686f08d45" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_eb480479-e208-4b33-ba4d-abc8aeb51baa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_8e2bd674-07e5-4d85-b044-60d25f8ddd1e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_f5709e78-2380-4e61-8231-c861c5593a88" xlink:to="loc_us-gaap_StatementTable_8e2bd674-07e5-4d85-b044-60d25f8ddd1e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8e2bd674-07e5-4d85-b044-60d25f8ddd1e" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5" xlink:to="loc_us-gaap_EquityComponentDomain_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ef3eb15a-9a52-4ea3-a3bd-5a17715eb0b5" xlink:to="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_e17dfe78-16a7-41bb-bb54-bf2daefe65a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_CommonStockMember_e17dfe78-16a7-41bb-bb54-bf2daefe65a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_bab54954-a62e-4cf2-9c58-4df6da8af3b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_bab54954-a62e-4cf2-9c58-4df6da8af3b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_61e27a04-0855-48af-8f1b-b7009832b35b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_RetainedEarningsMember_61e27a04-0855-48af-8f1b-b7009832b35b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6263ceef-c56e-4791-aae7-dad618b16731" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6263ceef-c56e-4791-aae7-dad618b16731" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_11a10d83-2555-46be-824d-2f5dd3aee5af" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_TreasuryStockMember_11a10d83-2555-46be-824d-2f5dd3aee5af" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_45eaf817-302a-4be3-8911-a93ae7125498" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_82776a91-9da2-46b4-90cd-da59356c681c" xlink:to="loc_us-gaap_NoncontrollingInterestMember_45eaf817-302a-4be3-8911-a93ae7125498" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="eri-20200930.xsd#CONSOLIDATEDCONDENSEDSTATEMENTSOFCASHFLOWS"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/CONSOLIDATEDCONDENSEDSTATEMENTSOFCASHFLOWS" xlink:type="extended" id="ifa9c073513344a518051aa87aab5148c_CONSOLIDATEDCONDENSEDSTATEMENTSOFCASHFLOWS"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentation" xlink:type="simple" xlink:href="eri-20200930.xsd#OrganizationandBasisofPresentation"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentation" xlink:type="extended" id="i9fb6e3b5c17c43a1961093959cd972f9_OrganizationandBasisofPresentation"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationPolicies" xlink:type="simple" xlink:href="eri-20200930.xsd#OrganizationandBasisofPresentationPolicies"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationPolicies" xlink:type="extended" id="i0e5a37fdc54740228e248713d05d79f5_OrganizationandBasisofPresentationPolicies"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationOrganizationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#OrganizationandBasisofPresentationOrganizationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationOrganizationDetails" xlink:type="extended" id="i38a47d6257c54994885f54b65b0836ba_OrganizationandBasisofPresentationOrganizationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_1aada40a-3575-4f48-a951-78740012d2cc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_1aada40a-3575-4f48-a951-78740012d2cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_TotalNumberOfProperties_83b77ee2-e550-47dc-90d6-01c17d5936a1" xlink:href="eri-20200930.xsd#eri_TotalNumberOfProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_eri_TotalNumberOfProperties_83b77ee2-e550-47dc-90d6-01c17d5936a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates_88e79aab-9560-4873-828f-d8a6ebc0c7ec" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfStatesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates_88e79aab-9560-4873-828f-d8a6ebc0c7ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfSlotMachinesAndVideoLotteryTerminals_4ac2a069-52df-4c1b-a9fa-cc13b366d8fe" xlink:href="eri-20200930.xsd#eri_NumberOfSlotMachinesAndVideoLotteryTerminals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_eri_NumberOfSlotMachinesAndVideoLotteryTerminals_4ac2a069-52df-4c1b-a9fa-cc13b366d8fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfTableGames_ee5cd22f-2c72-4051-8bdb-c3d919533e4a" xlink:href="eri-20200930.xsd#eri_NumberOfTableGames"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_eri_NumberOfTableGames_ee5cd22f-2c72-4051-8bdb-c3d919533e4a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfRoomsInHotel_5bbd6775-61e2-4062-8cf7-5cf791097817" xlink:href="eri-20200930.xsd#eri_NumberOfRoomsInHotel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_eri_NumberOfRoomsInHotel_5bbd6775-61e2-4062-8cf7-5cf791097817" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_8b2940e5-9b58-4e51-8c86-03efaed0ba0f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfCountriesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_8b2940e5-9b58-4e51-8c86-03efaed0ba0f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_07852f5e-ff25-442d-9032-a0a43c1ce091" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_07852f5e-ff25-442d-9032-a0a43c1ce091" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_acab4793-7265-4a57-967a-4668ac4f568c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_acab4793-7265-4a57-967a-4668ac4f568c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_e34e4012-7d7a-485a-8157-a67061989ea6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_e34e4012-7d7a-485a-8157-a67061989ea6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_BasisOfPresentationLineItems_1589ad0f-3ced-454b-957d-95a03e4ca359" xlink:to="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_a0d43d38-7cf0-4e0f-821f-f73e7960d685" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_a0d43d38-7cf0-4e0f-821f-f73e7960d685" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_a0d43d38-7cf0-4e0f-821f-f73e7960d685_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_a0d43d38-7cf0-4e0f-821f-f73e7960d685" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_a0d43d38-7cf0-4e0f-821f-f73e7960d685_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_2de6fc3e-7402-4d3d-b9e8-d7cbbd085775" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_a0d43d38-7cf0-4e0f-821f-f73e7960d685" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_2de6fc3e-7402-4d3d-b9e8-d7cbbd085775" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SilverLegacyJointVentureMember_1d310e7b-7064-4e68-af13-ca08b5d9aefe" xlink:href="eri-20200930.xsd#eri_SilverLegacyJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_2de6fc3e-7402-4d3d-b9e8-d7cbbd085775" xlink:to="loc_eri_SilverLegacyJointVentureMember_1d310e7b-7064-4e68-af13-ca08b5d9aefe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_1c3211f6-5b38-42ac-9644-3d59b950dedd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_1c3211f6-5b38-42ac-9644-3d59b950dedd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1c3211f6-5b38-42ac-9644-3d59b950dedd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1c3211f6-5b38-42ac-9644-3d59b950dedd" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1c3211f6-5b38-42ac-9644-3d59b950dedd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1ef42d7b-92ab-45d2-bb12-507af6f4ea72" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1c3211f6-5b38-42ac-9644-3d59b950dedd" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1ef42d7b-92ab-45d2-bb12-507af6f4ea72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_6cc1a270-12b1-4595-8c20-127543b18d42" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_1ef42d7b-92ab-45d2-bb12-507af6f4ea72" xlink:to="loc_us-gaap_SubsequentEventMember_6cc1a270-12b1-4595-8c20-127543b18d42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f96cbbba-86b6-44ab-a94e-29d7519f0c53" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f96cbbba-86b6-44ab-a94e-29d7519f0c53" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f96cbbba-86b6-44ab-a94e-29d7519f0c53_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f96cbbba-86b6-44ab-a94e-29d7519f0c53" xlink:to="loc_us-gaap_RelatedPartyDomain_f96cbbba-86b6-44ab-a94e-29d7519f0c53_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_8c9cc09f-1716-40e8-bf8a-9539947eeb2c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f96cbbba-86b6-44ab-a94e-29d7519f0c53" xlink:to="loc_us-gaap_RelatedPartyDomain_8c9cc09f-1716-40e8-bf8a-9539947eeb2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember_b192a1fb-d0ca-4ba7-8dc4-a6238b6fa686" xlink:href="eri-20200930.xsd#eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_8c9cc09f-1716-40e8-bf8a-9539947eeb2c" xlink:to="loc_eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember_b192a1fb-d0ca-4ba7-8dc4-a6238b6fa686" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember_fccd4911-ddc8-4d83-b3f0-ec765483e341" xlink:href="eri-20200930.xsd#eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingAndLeisurePropertiesMember_36b04ec7-2a81-4173-b078-d810d9bd3ef0" xlink:href="eri-20200930.xsd#eri_GamingAndLeisurePropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_8c9cc09f-1716-40e8-bf8a-9539947eeb2c" xlink:to="loc_eri_GamingAndLeisurePropertiesMember_36b04ec7-2a81-4173-b078-d810d9bd3ef0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIPropertiesLPMember_2e39e7eb-20fd-4418-9877-1cc88d8b933f" xlink:href="eri-20200930.xsd#eri_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_8c9cc09f-1716-40e8-bf8a-9539947eeb2c" xlink:to="loc_eri_VICIPropertiesLPMember_2e39e7eb-20fd-4418-9877-1cc88d8b933f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b561f305-c1b5-478c-a432-6df65230b19c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b561f305-c1b5-478c-a432-6df65230b19c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b561f305-c1b5-478c-a432-6df65230b19c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b561f305-c1b5-478c-a432-6df65230b19c" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b561f305-c1b5-478c-a432-6df65230b19c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c85992a3-7fcc-47eb-8843-3d37af274719" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b561f305-c1b5-478c-a432-6df65230b19c" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c85992a3-7fcc-47eb-8843-3d37af274719" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EvansvilleMember_05746dab-efc7-4d70-b5d7-903e53bd4793" xlink:href="eri-20200930.xsd#eri_EvansvilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c85992a3-7fcc-47eb-8843-3d37af274719" xlink:to="loc_eri_EvansvilleMember_05746dab-efc7-4d70-b5d7-903e53bd4793" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsLouisianaDownsMember_e3f8481d-02b1-47b1-b351-41c839cd1c92" xlink:href="eri-20200930.xsd#eri_HarrahsLouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c85992a3-7fcc-47eb-8843-3d37af274719" xlink:to="loc_eri_HarrahsLouisianaDownsMember_e3f8481d-02b1-47b1-b351-41c839cd1c92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_415f21c4-3c96-4af2-8bb5-6a9354b0b17d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_a0260f00-26ab-4a48-9f51-3c184987a007" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_415f21c4-3c96-4af2-8bb5-6a9354b0b17d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_415f21c4-3c96-4af2-8bb5-6a9354b0b17d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_415f21c4-3c96-4af2-8bb5-6a9354b0b17d" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_415f21c4-3c96-4af2-8bb5-6a9354b0b17d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ed07e27a-03d8-4bf0-9986-b26cb0fed83f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_415f21c4-3c96-4af2-8bb5-6a9354b0b17d" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ed07e27a-03d8-4bf0-9986-b26cb0fed83f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_1f5ac67d-dc17-4eae-ba9b-d25d2b07b221" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ed07e27a-03d8-4bf0-9986-b26cb0fed83f" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_1f5ac67d-dc17-4eae-ba9b-d25d2b07b221" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationProposedAcquisitionofWilliamHillDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#OrganizationandBasisofPresentationProposedAcquisitionofWilliamHillDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationProposedAcquisitionofWilliamHillDetails" xlink:type="extended" id="i812ac63d4ab5437fa1d0f8272dc4d75d_OrganizationandBasisofPresentationProposedAcquisitionofWilliamHillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_96c70470-5ad5-4dcd-8b94-544a50dc1d21" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_96c70470-5ad5-4dcd-8b94-544a50dc1d21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EquityMethodInvestmentsValueInCommonShares_f2537a3a-0825-4071-84c0-5167cbb400c2" xlink:href="eri-20200930.xsd#eri_EquityMethodInvestmentsValueInCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_eri_EquityMethodInvestmentsValueInCommonShares_f2537a3a-0825-4071-84c0-5167cbb400c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_de9c97bf-68f8-48b4-9432-55d919d0df58" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_de9c97bf-68f8-48b4-9432-55d919d0df58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_e7126941-c78b-4055-ac43-2fcf07eb95c2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_e7126941-c78b-4055-ac43-2fcf07eb95c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_52255f5f-4b3e-4386-bf84-312f63a5f44b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_EscrowDeposit_52255f5f-4b3e-4386-bf84-312f63a5f44b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_715da7c5-356b-4189-92ce-7597df04aa2f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_715da7c5-356b-4189-92ce-7597df04aa2f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_d4b7a709-1925-4052-a83b-a3b99428629a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_d4b7a709-1925-4052-a83b-a3b99428629a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_957d6968-2227-443f-ac84-b04fb3795514" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_LineOfCredit_957d6968-2227-443f-ac84-b04fb3795514" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedInvestments_88954470-15ba-48a3-8e2a-e2b6ae5776a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_RestrictedInvestments_88954470-15ba-48a3-8e2a-e2b6ae5776a7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfLoanCosts_acc904f6-9f65-465e-afce-2ca4528776fc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfLoanCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_PaymentsOfLoanCosts_acc904f6-9f65-465e-afce-2ca4528776fc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_2c8ef4de-6847-4e13-8657-6bcf70c07bc8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_NumberOfReportableSegments_2c8ef4de-6847-4e13-8657-6bcf70c07bc8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_37306b40-06c2-4713-a65a-e34325845f8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_EquityMethodInvestments_37306b40-06c2-4713-a65a-e34325845f8a" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_af1788fc-7de8-42de-bc80-d706c5cfe9c0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_af1788fc-7de8-42de-bc80-d706c5cfe9c0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_BasisOfPresentationLineItems_cdf011fb-431f-4c67-816c-a93881072819" xlink:to="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c1f4e87b-0100-45fb-8494-aee96c6c9dc9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c1f4e87b-0100-45fb-8494-aee96c6c9dc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_c1f4e87b-0100-45fb-8494-aee96c6c9dc9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c1f4e87b-0100-45fb-8494-aee96c6c9dc9" xlink:to="loc_us-gaap_RelatedPartyDomain_c1f4e87b-0100-45fb-8494-aee96c6c9dc9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_1912e704-d1f1-4bce-aaed-f451aade494e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c1f4e87b-0100-45fb-8494-aee96c6c9dc9" xlink:to="loc_us-gaap_RelatedPartyDomain_1912e704-d1f1-4bce-aaed-f451aade494e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillMember_1263d4e6-587f-4a7a-8b9f-b71eb278f500" xlink:href="eri-20200930.xsd#eri_WilliamHillMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_1912e704-d1f1-4bce-aaed-f451aade494e" xlink:to="loc_eri_WilliamHillMember_1263d4e6-587f-4a7a-8b9f-b71eb278f500" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DeutscheBankAGLondonBranchAndJPMorganChaseBankNAMember_b418e79b-426f-4616-8c4c-2ec9ab5ca7b1" xlink:href="eri-20200930.xsd#eri_DeutscheBankAGLondonBranchAndJPMorganChaseBankNAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_1912e704-d1f1-4bce-aaed-f451aade494e" xlink:to="loc_eri_DeutscheBankAGLondonBranchAndJPMorganChaseBankNAMember_b418e79b-426f-4616-8c4c-2ec9ab5ca7b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e2ab10f0-9d17-4e7e-af5d-ac58562ddce3" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillPLCMember_8afc01f5-91d9-4707-af7b-6a4e4a5878af" xlink:href="eri-20200930.xsd#eri_WilliamHillPLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:to="loc_eri_WilliamHillPLCMember_8afc01f5-91d9-4707-af7b-6a4e4a5878af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillMember_06d03772-e462-4354-b595-158f17cf8531" xlink:href="eri-20200930.xsd#eri_WilliamHillMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:to="loc_eri_WilliamHillMember_06d03772-e462-4354-b595-158f17cf8531" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AssetSaleBridgeFacilityMember_619bdc89-bf58-4b7b-b189-28eb45908897" xlink:href="eri-20200930.xsd#eri_AssetSaleBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:to="loc_eri_AssetSaleBridgeFacilityMember_619bdc89-bf58-4b7b-b189-28eb45908897" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CashConfirmationBridgeFacilityMember_26cf88e8-d771-42b3-8d53-e756cfc8b5da" xlink:href="eri-20200930.xsd#eri_CashConfirmationBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2810847f-1df8-4366-9915-a45594330551" xlink:to="loc_eri_CashConfirmationBridgeFacilityMember_26cf88e8-d771-42b3-8d53-e756cfc8b5da" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_d5ed937d-32d9-4cec-95bc-4fceb57c7028" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:to="loc_us-gaap_CreditFacilityAxis_d5ed937d-32d9-4cec-95bc-4fceb57c7028" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_d5ed937d-32d9-4cec-95bc-4fceb57c7028_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_d5ed937d-32d9-4cec-95bc-4fceb57c7028" xlink:to="loc_us-gaap_CreditFacilityDomain_d5ed937d-32d9-4cec-95bc-4fceb57c7028_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_d5ed937d-32d9-4cec-95bc-4fceb57c7028" xlink:to="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEIRevolvingCreditFacilityMember_8557be8f-68a3-4a69-8b4b-a1a74fa43f81" xlink:href="eri-20200930.xsd#eri_CEIRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:to="loc_eri_CEIRevolvingCreditFacilityMember_8557be8f-68a3-4a69-8b4b-a1a74fa43f81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecured540DayBridgeLoanFacilityMember_1ef44f78-6bf2-4054-899c-cfc78f34327d" xlink:href="eri-20200930.xsd#eri_SeniorSecured540DayBridgeLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:to="loc_eri_SeniorSecured540DayBridgeLoanFacilityMember_1ef44f78-6bf2-4054-899c-cfc78f34327d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredRevolvingCreditFacilityMember_8438ca78-9b6a-49c6-bb43-4525a1230af5" xlink:href="eri-20200930.xsd#eri_SeniorSecuredRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:to="loc_eri_SeniorSecuredRevolvingCreditFacilityMember_8438ca78-9b6a-49c6-bb43-4525a1230af5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecured60DayBridgeLoanFacilityMember_14f60929-e2af-478c-ab35-15ee21d340c2" xlink:href="eri-20200930.xsd#eri_SeniorSecured60DayBridgeLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5c98b4e6-ce98-4a70-bf9d-24b0b8156a97" xlink:to="loc_eri_SeniorSecured60DayBridgeLoanFacilityMember_14f60929-e2af-478c-ab35-15ee21d340c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_94948aa0-3edc-4be4-ba06-07bf0fedd641" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_94948aa0-3edc-4be4-ba06-07bf0fedd641" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_94948aa0-3edc-4be4-ba06-07bf0fedd641_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_94948aa0-3edc-4be4-ba06-07bf0fedd641" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_94948aa0-3edc-4be4-ba06-07bf0fedd641_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c120d251-bbc2-4a86-8ee7-3b567af693a8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_94948aa0-3edc-4be4-ba06-07bf0fedd641" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c120d251-bbc2-4a86-8ee7-3b567af693a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_cdc9c730-90ff-42a8-b884-530e8e5b3f53" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_c120d251-bbc2-4a86-8ee7-3b567af693a8" xlink:to="loc_us-gaap_LineOfCreditMember_cdc9c730-90ff-42a8-b884-530e8e5b3f53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_1fc52467-5e14-4401-adbc-3947354f1876" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_e41bd4f4-bef3-412f-a381-832c356573f1" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_1fc52467-5e14-4401-adbc-3947354f1876" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1fc52467-5e14-4401-adbc-3947354f1876_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1fc52467-5e14-4401-adbc-3947354f1876" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1fc52467-5e14-4401-adbc-3947354f1876_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4282581f-6780-4bc8-b41f-d13bbd10aa83" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1fc52467-5e14-4401-adbc-3947354f1876" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4282581f-6780-4bc8-b41f-d13bbd10aa83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_23e8d828-5b8b-41dd-a0c3-defee7d98882" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_4282581f-6780-4bc8-b41f-d13bbd10aa83" xlink:to="loc_us-gaap_SubsequentEventMember_23e8d828-5b8b-41dd-a0c3-defee7d98882" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#OrganizationandBasisofPresentationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/OrganizationandBasisofPresentationAdditionalInformationDetails" xlink:type="extended" id="ibf5ecf332800410b84689843ac27831c_OrganizationandBasisofPresentationAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationLineItems_9c43c6b6-f930-4be0-8668-c1c9f7e265f4" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfGeographicRegion_feaf651d-eb89-4276-a96f-77301789fb96" xlink:href="eri-20200930.xsd#eri_NumberOfGeographicRegion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_9c43c6b6-f930-4be0-8668-c1c9f7e265f4" xlink:to="loc_eri_NumberOfGeographicRegion_feaf651d-eb89-4276-a96f-77301789fb96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_ef60e834-8e26-4d21-8f17-36aff7e2e9ed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_9c43c6b6-f930-4be0-8668-c1c9f7e265f4" xlink:to="loc_us-gaap_NumberOfReportableSegments_ef60e834-8e26-4d21-8f17-36aff7e2e9ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_PercentageOfFurloughedEmployees_fde80e82-84da-40bc-a432-7bf82e540cfa" xlink:href="eri-20200930.xsd#eri_PercentageOfFurloughedEmployees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_BasisOfPresentationLineItems_9c43c6b6-f930-4be0-8668-c1c9f7e265f4" xlink:to="loc_eri_PercentageOfFurloughedEmployees_fde80e82-84da-40bc-a432-7bf82e540cfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BasisOfPresentationTable_3770c092-349e-449f-b08a-ac0e3410cd92" xlink:href="eri-20200930.xsd#eri_BasisOfPresentationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_BasisOfPresentationLineItems_9c43c6b6-f930-4be0-8668-c1c9f7e265f4" xlink:to="loc_eri_BasisOfPresentationTable_3770c092-349e-449f-b08a-ac0e3410cd92" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_a71f9364-0794-4ddf-bbdc-deea4e77ef91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_BasisOfPresentationTable_3770c092-349e-449f-b08a-ac0e3410cd92" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_a71f9364-0794-4ddf-bbdc-deea4e77ef91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_a71f9364-0794-4ddf-bbdc-deea4e77ef91_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_a71f9364-0794-4ddf-bbdc-deea4e77ef91" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_a71f9364-0794-4ddf-bbdc-deea4e77ef91_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8c2b6ea5-dfd8-4d2b-9dc8-f116a9751b1a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_a71f9364-0794-4ddf-bbdc-deea4e77ef91" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8c2b6ea5-dfd8-4d2b-9dc8-f116a9751b1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsLouisianaDownsMember_12e978e5-dfc1-4dd1-b731-0964b6442654" xlink:href="eri-20200930.xsd#eri_HarrahsLouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8c2b6ea5-dfd8-4d2b-9dc8-f116a9751b1a" xlink:to="loc_eri_HarrahsLouisianaDownsMember_12e978e5-dfc1-4dd1-b731-0964b6442654" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesars" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesars"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesars" xlink:type="extended" id="i235ef65d48ca4a16a68a7ea947945cc4_AcquisitionofFormerCaesars"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsTables" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsTables" xlink:type="extended" id="i7552d00235824a739bc32f3e9b47d05d_AcquisitionofFormerCaesarsTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsMergerwithCaesarsEntertainmentCorporationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsMergerwithCaesarsEntertainmentCorporationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsMergerwithCaesarsEntertainmentCorporationDetails" xlink:type="extended" id="i12cb4e950a04477d8bee2cd24eb640c9_AcquisitionofFormerCaesarsMergerwithCaesarsEntertainmentCorporationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_8872b4e5-0cc2-42c2-bbe0-b36baabf7f80" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_8872b4e5-0cc2-42c2-bbe0-b36baabf7f80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_6baeb36a-5672-4ea1-bf3f-bee9a751ae7b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_6baeb36a-5672-4ea1-bf3f-bee9a751ae7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_724d2ea9-3566-434d-9a64-9e39d666a589" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_724d2ea9-3566-434d-9a64-9e39d666a589" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BusinessCombinationConsiderationTransferredCashInterest_4f8067c3-195e-410a-856c-fe8c0a477e39" xlink:href="eri-20200930.xsd#eri_BusinessCombinationConsiderationTransferredCashInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_eri_BusinessCombinationConsiderationTransferredCashInterest_4f8067c3-195e-410a-856c-fe8c0a477e39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_74cf5ad4-a2cb-4251-a37e-b48badcdabfd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_74cf5ad4-a2cb-4251-a37e-b48badcdabfd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_c36d5ce3-c71d-428b-82d5-a770b828e466" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredOther1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_c36d5ce3-c71d-428b-82d5-a770b828e466" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_279effeb-b772-45ca-a0f4-d99be0f1c11a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_279effeb-b772-45ca-a0f4-d99be0f1c11a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedPaymentArrangementReplacementAwards_307b0528-1d68-49ac-8207-1fc95b25a6bf" xlink:href="eri-20200930.xsd#eri_ShareBasedPaymentArrangementReplacementAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_eri_ShareBasedPaymentArrangementReplacementAwards_307b0528-1d68-49ac-8207-1fc95b25a6bf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RightToReceivePerShare_e1b465ce-e2c4-4d77-bedf-6d2cb562d404" xlink:href="eri-20200930.xsd#eri_RightToReceivePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_eri_RightToReceivePerShare_e1b465ce-e2c4-4d77-bedf-6d2cb562d404" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_73821376-c63b-48d4-b798-31212a5fa549" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityNoteStockSplitConversionRatio1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_73821376-c63b-48d4-b798-31212a5fa549" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_861a2c06-925d-4d72-bbef-a31d97e73884" xlink:href="eri-20200930.xsd#eri_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_eri_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_861a2c06-925d-4d72-bbef-a31d97e73884" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_cb6779de-2132-4943-b2a3-5ce83859c681" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_cb6779de-2132-4943-b2a3-5ce83859c681" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4468f175-3b2e-4ff0-9efc-a983575576b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a1b71177-b83e-4d33-bb34-a21481c5debd" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4468f175-3b2e-4ff0-9efc-a983575576b3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4468f175-3b2e-4ff0-9efc-a983575576b3" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a036468c-5566-472e-8a27-e12b01d33941" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_da4b73ae-3a56-49ba-8f9a-36fc33c0bb7b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a036468c-5566-472e-8a27-e12b01d33941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_b456e28a-f2ff-4d67-9a34-a8e2de445b61" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a036468c-5566-472e-8a27-e12b01d33941" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_b456e28a-f2ff-4d67-9a34-a8e2de445b61" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FormerCaesarsEntertainmentCorporationMember_a3274bf6-0b03-4e51-a683-8370f07c2310" xlink:href="eri-20200930.xsd#eri_FormerCaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a036468c-5566-472e-8a27-e12b01d33941" xlink:to="loc_eri_FormerCaesarsEntertainmentCorporationMember_a3274bf6-0b03-4e51-a683-8370f07c2310" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_ee020fee-86c9-4098-9c8b-1acf88378bf5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityInterestIssuedOrIssuableByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4468f175-3b2e-4ff0-9efc-a983575576b3" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_ee020fee-86c9-4098-9c8b-1acf88378bf5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_ee020fee-86c9-4098-9c8b-1acf88378bf5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_ee020fee-86c9-4098-9c8b-1acf88378bf5" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_ee020fee-86c9-4098-9c8b-1acf88378bf5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_9219b394-516d-42b1-aecc-037b8fa8fc3b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_ee020fee-86c9-4098-9c8b-1acf88378bf5" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_9219b394-516d-42b1-aecc-037b8fa8fc3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_dbdb01a2-5427-42db-ac78-d267d87c4422" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_9219b394-516d-42b1-aecc-037b8fa8fc3b" xlink:to="loc_us-gaap_CommonStockMember_dbdb01a2-5427-42db-ac78-d267d87c4422" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_06686aeb-cad7-474a-8b94-3098d5fdbddd" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4468f175-3b2e-4ff0-9efc-a983575576b3" xlink:to="loc_srt_ConsolidatedEntitiesAxis_06686aeb-cad7-474a-8b94-3098d5fdbddd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_06686aeb-cad7-474a-8b94-3098d5fdbddd_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_06686aeb-cad7-474a-8b94-3098d5fdbddd" xlink:to="loc_srt_ConsolidatedEntitiesDomain_06686aeb-cad7-474a-8b94-3098d5fdbddd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_9c36bcd8-66eb-4ff0-873b-519d46cbd4fb" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_06686aeb-cad7-474a-8b94-3098d5fdbddd" xlink:to="loc_srt_ConsolidatedEntitiesDomain_9c36bcd8-66eb-4ff0-873b-519d46cbd4fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FormerCaesarsEntertainmentCorporationStockholdersMember_e8868d72-eef5-4311-a9d7-2228494ed005" xlink:href="eri-20200930.xsd#eri_FormerCaesarsEntertainmentCorporationStockholdersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_9c36bcd8-66eb-4ff0-873b-519d46cbd4fb" xlink:to="loc_eri_FormerCaesarsEntertainmentCorporationStockholdersMember_e8868d72-eef5-4311-a9d7-2228494ed005" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsScheduleofBusinessAcquisitionbyAcquisitionDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsScheduleofBusinessAcquisitionbyAcquisitionDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsScheduleofBusinessAcquisitionbyAcquisitionDetails" xlink:type="extended" id="if793a9abe4e64a788b8e95d636aa056c_AcquisitionofFormerCaesarsScheduleofBusinessAcquisitionbyAcquisitionDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_063ca8fb-11f6-46a6-be86-7b95d4840c69" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_063ca8fb-11f6-46a6-be86-7b95d4840c69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_13dd1ac3-8881-4619-b189-c10a21003f5a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_13dd1ac3-8881-4619-b189-c10a21003f5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_fcc313ae-4e5a-4b42-bc0c-d0eebbbfd330" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_fcc313ae-4e5a-4b42-bc0c-d0eebbbfd330" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_8006ae21-7cb7-44bd-bdd4-5042ed2a43a6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredOther1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_8006ae21-7cb7-44bd-bdd4-5042ed2a43a6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_bd71b57a-b636-494c-8c43-625f0d6ad87d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_bd71b57a-b636-494c-8c43-625f0d6ad87d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8f7e67a2-2586-4c9c-af23-0454ea561c44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_17133d23-5d7a-43cd-941c-9117fd3fa921" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8f7e67a2-2586-4c9c-af23-0454ea561c44" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8f7e67a2-2586-4c9c-af23-0454ea561c44" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5dbe43c-e56c-42c7-86f7-b1f9d1b2fec9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c1fa0b7b-d6f7-4e8a-8ad9-4b575bccb5e7" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5dbe43c-e56c-42c7-86f7-b1f9d1b2fec9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_5ff86ac5-38a9-4d38-aa0b-38d1605df286" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5dbe43c-e56c-42c7-86f7-b1f9d1b2fec9" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_5ff86ac5-38a9-4d38-aa0b-38d1605df286" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsScheduleofRecognizedIdentifiedAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsScheduleofRecognizedIdentifiedAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsScheduleofRecognizedIdentifiedAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended" id="i73ec6150d9b74ad1bdc61b96622483fe_AcquisitionofFormerCaesarsScheduleofRecognizedIdentifiedAssetsAcquiredandLiabilitiesAssumedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsAndOtherAssets_05fbebbc-2cd5-41a9-8d39-0cc5e9158bb6" xlink:href="eri-20200930.xsd#eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsAndOtherAssets_05fbebbc-2cd5-41a9-8d39-0cc5e9158bb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_26f6f1b7-aaef-4de1-9275-906bf5e58600" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_26f6f1b7-aaef-4de1-9275-906bf5e58600" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_68750234-8b5c-4138-b423-9fcc1c082e5a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_Goodwill_68750234-8b5c-4138-b423-9fcc1c082e5a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_c98bfc72-9677-47e1-b91a-f341e437fcc6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_c98bfc72-9677-47e1-b91a-f341e437fcc6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_28d04591-7e99-4f15-ac25-7511a0127915" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_28d04591-7e99-4f15-ac25-7511a0127915" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill_01a614be-7fe9-4bc7-b0d8-2494dd61d7be" xlink:href="eri-20200930.xsd#eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill_01a614be-7fe9-4bc7-b0d8-2494dd61d7be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_01d93b3c-576b-4562-ab6d-864bcf8b7737" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_01d93b3c-576b-4562-ab6d-864bcf8b7737" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancingObligation_5f29c6a3-1485-4921-bbd5-5fbedd2c87e5" xlink:href="eri-20200930.xsd#eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancingObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_eri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancingObligation_5f29c6a3-1485-4921-bbd5-5fbedd2c87e5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_50df8606-70a4-4271-b836-1c5f20d8c4bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_50df8606-70a4-4271-b836-1c5f20d8c4bb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities_1c52705d-aa94-4385-b156-fc205fd0f25e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities_1c52705d-aa94-4385-b156-fc205fd0f25e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_a3a6e34c-50c4-4ef7-b5cb-560ec2b86364" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_a3a6e34c-50c4-4ef7-b5cb-560ec2b86364" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_7d45faa0-4ad8-448e-9125-67bc572f75de" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_7d45faa0-4ad8-448e-9125-67bc572f75de" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest_819b16a7-3abf-4f68-999e-1704f9f827b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest_819b16a7-3abf-4f68-999e-1704f9f827b3" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_52174cfa-4a97-4668-a0f7-d3db86e140e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_52174cfa-4a97-4668-a0f7-d3db86e140e2" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8d90df95-b5eb-45bb-8276-193956e5ed26" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_c842a944-ac32-4bb8-9d8e-4f3fa2abca48" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8d90df95-b5eb-45bb-8276-193956e5ed26" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_a44e139e-98fe-4e07-9002-6ba6d553ffee" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8d90df95-b5eb-45bb-8276-193956e5ed26" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_a44e139e-98fe-4e07-9002-6ba6d553ffee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a44e139e-98fe-4e07-9002-6ba6d553ffee_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a44e139e-98fe-4e07-9002-6ba6d553ffee" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a44e139e-98fe-4e07-9002-6ba6d553ffee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_943fd93d-e1d7-4550-92bb-4e49f4694c20" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a44e139e-98fe-4e07-9002-6ba6d553ffee" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_943fd93d-e1d7-4550-92bb-4e49f4694c20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_664584b4-c81d-4bd4-827e-b324289c9d3c" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_943fd93d-e1d7-4550-92bb-4e49f4694c20" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_664584b4-c81d-4bd4-827e-b324289c9d3c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_268de708-b2c5-4982-8910-105cd0ca6595" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8d90df95-b5eb-45bb-8276-193956e5ed26" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_268de708-b2c5-4982-8910-105cd0ca6595" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_268de708-b2c5-4982-8910-105cd0ca6595_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_268de708-b2c5-4982-8910-105cd0ca6595" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_268de708-b2c5-4982-8910-105cd0ca6595_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_268de708-b2c5-4982-8910-105cd0ca6595" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingLicensesMember_27f47775-5a61-49ee-9cb3-930c4830b918" xlink:href="eri-20200930.xsd#eri_GamingLicensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:to="loc_eri_GamingLicensesMember_27f47775-5a61-49ee-9cb3-930c4830b918" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_785a4d72-efc2-45d5-970b-dc8e9b0d1c1c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:to="loc_us-gaap_TradeNamesMember_785a4d72-efc2-45d5-970b-dc8e9b0d1c1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsRewardsProgramsMember_ce9f978f-af29-4907-a7a2-86c27f1290fd" xlink:href="eri-20200930.xsd#eri_CaesarsRewardsProgramsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:to="loc_eri_CaesarsRewardsProgramsMember_ce9f978f-af29-4907-a7a2-86c27f1290fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_2a69135d-163c-4332-8b02-fd34ae8b1a31" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1a2ea548-2b4e-4190-8a6d-e17931311d3c" xlink:to="loc_us-gaap_CustomerRelationshipsMember_2a69135d-163c-4332-8b02-fd34ae8b1a31" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsFinancingReceivableAllowanceforCreditLossDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsFinancingReceivableAllowanceforCreditLossDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsFinancingReceivableAllowanceforCreditLossDetails" xlink:type="extended" id="i0f3d4a34c16d40e1a74e026f632a7018_AcquisitionofFormerCaesarsFinancingReceivableAllowanceforCreditLossDetails"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsPreliminaryPurchasePriceAllocationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsPreliminaryPurchasePriceAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsPreliminaryPurchasePriceAllocationDetails" xlink:type="extended" id="i795d4473362c470180532abc386d6aa5_AcquisitionofFormerCaesarsPreliminaryPurchasePriceAllocationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_d9b23547-91e0-42ae-8985-526b2c45da61" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_3319f990-ab80-44ea-b2c3-da62f7032a0f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d9b23547-91e0-42ae-8985-526b2c45da61" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_3319f990-ab80-44ea-b2c3-da62f7032a0f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_e7fa2e80-a50c-4068-9323-4c25196fc366" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d9b23547-91e0-42ae-8985-526b2c45da61" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_e7fa2e80-a50c-4068-9323-4c25196fc366" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_9b625294-d406-446c-8eaf-4c929951246c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d9b23547-91e0-42ae-8985-526b2c45da61" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_9b625294-d406-446c-8eaf-4c929951246c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_a4da9654-69c4-467f-abeb-07abe880a63e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d9b23547-91e0-42ae-8985-526b2c45da61" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_a4da9654-69c4-467f-abeb-07abe880a63e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_65f243e9-82cd-407a-a0ed-05dfc93274d8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_a4da9654-69c4-467f-abeb-07abe880a63e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_65f243e9-82cd-407a-a0ed-05dfc93274d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_65f243e9-82cd-407a-a0ed-05dfc93274d8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_65f243e9-82cd-407a-a0ed-05dfc93274d8" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_65f243e9-82cd-407a-a0ed-05dfc93274d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_93a2e77e-b665-4343-90be-7ded958fa989" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_65f243e9-82cd-407a-a0ed-05dfc93274d8" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_93a2e77e-b665-4343-90be-7ded958fa989" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_a6cd64af-62f9-4d0a-b3b0-3e8152bb6afb" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_93a2e77e-b665-4343-90be-7ded958fa989" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_a6cd64af-62f9-4d0a-b3b0-3e8152bb6afb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsBusinessAcquisitionProFormaInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AcquisitionofFormerCaesarsBusinessAcquisitionProFormaInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AcquisitionofFormerCaesarsBusinessAcquisitionProFormaInformationDetails" xlink:type="extended" id="ibafc764fb0b247e99afe1fc207adfec0_AcquisitionofFormerCaesarsBusinessAcquisitionProFormaInformationDetails"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RevenueRecognition" xlink:type="simple" xlink:href="eri-20200930.xsd#RevenueRecognition"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RevenueRecognition" xlink:type="extended" id="icf58eb344f4b43bf8b43627f42cfc7a2_RevenueRecognition"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="eri-20200930.xsd#RevenueRecognitionTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RevenueRecognitionTables" xlink:type="extended" id="i670245a5b5704f0a84d7f92c9672825d_RevenueRecognitionTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RevenueRecognitionSummaryofNetRevenuesDisaggregatedTypeofRevenueandReportableSegmentDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#RevenueRecognitionSummaryofNetRevenuesDisaggregatedTypeofRevenueandReportableSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RevenueRecognitionSummaryofNetRevenuesDisaggregatedTypeofRevenueandReportableSegmentDetails" xlink:type="extended" id="ia6c0c6d8d568438d89c0aa139cb8f558_RevenueRecognitionSummaryofNetRevenuesDisaggregatedTypeofRevenueandReportableSegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_83ab65db-df66-4769-8de6-5f353d2d71c9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_757950b8-14c6-4c88-9e2e-a151d7036e7a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_83ab65db-df66-4769-8de6-5f353d2d71c9" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_757950b8-14c6-4c88-9e2e-a151d7036e7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableBilledForLongTermContractsOrPrograms_7b1f0d7e-6529-4087-8583-703b32608536" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsReceivableBilledForLongTermContractsOrPrograms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_83ab65db-df66-4769-8de6-5f353d2d71c9" xlink:to="loc_us-gaap_AccountsReceivableBilledForLongTermContractsOrPrograms_7b1f0d7e-6529-4087-8583-703b32608536" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AccountReceivableNet_a8c2e5d9-f14a-4711-bd37-aa44e17850b5" xlink:href="eri-20200930.xsd#eri_AccountReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_83ab65db-df66-4769-8de6-5f353d2d71c9" xlink:to="loc_eri_AccountReceivableNet_a8c2e5d9-f14a-4711-bd37-aa44e17850b5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_de1c05ed-6003-4fa6-9563-e758345a2166" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_83ab65db-df66-4769-8de6-5f353d2d71c9" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_de1c05ed-6003-4fa6-9563-e758345a2166" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_de1c05ed-6003-4fa6-9563-e758345a2166" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af" xlink:to="loc_us-gaap_SegmentDomain_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_998d724a-268a-4041-9398-63fd282022b4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f8b31a0e-6dfd-4d32-b301-f8c3e3f963af" xlink:to="loc_us-gaap_SegmentDomain_998d724a-268a-4041-9398-63fd282022b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LasVegasMember_7769517d-fc6d-4107-8231-cc8dcfbfc408" xlink:href="eri-20200930.xsd#eri_LasVegasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_998d724a-268a-4041-9398-63fd282022b4" xlink:to="loc_eri_LasVegasMember_7769517d-fc6d-4107-8231-cc8dcfbfc408" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalMember_5d5ea577-6203-4ab3-a07c-2fe840acadf8" xlink:href="eri-20200930.xsd#eri_RegionalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_998d724a-268a-4041-9398-63fd282022b4" xlink:to="loc_eri_RegionalMember_5d5ea577-6203-4ab3-a07c-2fe840acadf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagedInternationalCIEMember_a41ee538-aa03-4060-89b2-41a75930b43f" xlink:href="eri-20200930.xsd#eri_ManagedInternationalCIEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_998d724a-268a-4041-9398-63fd282022b4" xlink:to="loc_eri_ManagedInternationalCIEMember_a41ee538-aa03-4060-89b2-41a75930b43f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_c443b697-5c95-4fea-9618-50f386db1d74" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_de1c05ed-6003-4fa6-9563-e758345a2166" xlink:to="loc_srt_ConsolidationItemsAxis_c443b697-5c95-4fea-9618-50f386db1d74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_c443b697-5c95-4fea-9618-50f386db1d74_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_c443b697-5c95-4fea-9618-50f386db1d74" xlink:to="loc_srt_ConsolidationItemsDomain_c443b697-5c95-4fea-9618-50f386db1d74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_78615953-827f-4ed2-b97c-851d3f72bb68" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_c443b697-5c95-4fea-9618-50f386db1d74" xlink:to="loc_srt_ConsolidationItemsDomain_78615953-827f-4ed2-b97c-851d3f72bb68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_b8be5189-ddeb-4d88-809e-12a5e0e17559" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_78615953-827f-4ed2-b97c-851d3f72bb68" xlink:to="loc_us-gaap_OperatingSegmentsMember_b8be5189-ddeb-4d88-809e-12a5e0e17559" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_7a90516a-dfab-49d6-9f68-235d1b07942f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_78615953-827f-4ed2-b97c-851d3f72bb68" xlink:to="loc_us-gaap_CorporateNonSegmentMember_7a90516a-dfab-49d6-9f68-235d1b07942f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_4e478101-7083-4b55-9b5f-9f443a9db1f0" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_de1c05ed-6003-4fa6-9563-e758345a2166" xlink:to="loc_srt_ProductOrServiceAxis_4e478101-7083-4b55-9b5f-9f443a9db1f0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_4e478101-7083-4b55-9b5f-9f443a9db1f0_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_4e478101-7083-4b55-9b5f-9f443a9db1f0" xlink:to="loc_srt_ProductsAndServicesDomain_4e478101-7083-4b55-9b5f-9f443a9db1f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_4e478101-7083-4b55-9b5f-9f443a9db1f0" xlink:to="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CasinoMember_9a97899e-aa59-46c0-8c94-45cc04cdfb0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CasinoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:to="loc_us-gaap_CasinoMember_9a97899e-aa59-46c0-8c94-45cc04cdfb0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageMember_74f0e782-3755-4b50-8dee-9bacd260e896" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FoodAndBeverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:to="loc_us-gaap_FoodAndBeverageMember_74f0e782-3755-4b50-8dee-9bacd260e896" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HotelOwnedMember_52b0dddc-e586-4df1-bd83-c5c5febb9e8f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HotelOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:to="loc_us-gaap_HotelOwnedMember_52b0dddc-e586-4df1-bd83-c5c5febb9e8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FoodBeverageAndHotelMember_1293fb47-05d1-4b0d-a478-fb709c4fcaed" xlink:href="eri-20200930.xsd#eri_FoodBeverageAndHotelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:to="loc_eri_FoodBeverageAndHotelMember_1293fb47-05d1-4b0d-a478-fb709c4fcaed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_70df619c-93ec-46ae-99da-d03d424b2650" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e46b8611-15b1-4fca-b666-82cab2a7fdfd" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_70df619c-93ec-46ae-99da-d03d424b2650" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RevenueRecognitionSummaryofActivityRelatedtoContractandContractRelatedLiabilitiesDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#RevenueRecognitionSummaryofActivityRelatedtoContractandContractRelatedLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RevenueRecognitionSummaryofActivityRelatedtoContractandContractRelatedLiabilitiesDetails" xlink:type="extended" id="i5b5fc6a1446a49629dc2bbc74f8555bf_RevenueRecognitionSummaryofActivityRelatedtoContractandContractRelatedLiabilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_3d697324-05d1-4af1-868a-6518c17cee38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_f4b33b45-3f7a-48cc-976a-0edd13195299" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_3d697324-05d1-4af1-868a-6518c17cee38" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_f4b33b45-3f7a-48cc-976a-0edd13195299" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_ad788666-7437-4612-90b8-28089ee6daa2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_53f05fbf-b310-481f-86b6-712803dcc7b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_3d697324-05d1-4af1-868a-6518c17cee38" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_53f05fbf-b310-481f-86b6-712803dcc7b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_45fc24a4-eefe-4ffc-8898-8c57fe8c151f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_3d697324-05d1-4af1-868a-6518c17cee38" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_45fc24a4-eefe-4ffc-8898-8c57fe8c151f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_45fc24a4-eefe-4ffc-8898-8c57fe8c151f" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_0d46cfe1-e594-493f-8bd5-32cd9ed858c0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c101fca4-b8db-4f7d-ac4d-8f78b5b22bd1" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_0d46cfe1-e594-493f-8bd5-32cd9ed858c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OutstandingChipLiabilityMember_21c54b44-f38e-4e6a-8d67-d41c0f125e73" xlink:href="eri-20200930.xsd#eri_OutstandingChipLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_0d46cfe1-e594-493f-8bd5-32cd9ed858c0" xlink:to="loc_eri_OutstandingChipLiabilityMember_21c54b44-f38e-4e6a-8d67-d41c0f125e73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsRewardsProgramsMember_f49c8c71-e0c3-4a2a-b771-a441476bf1b5" xlink:href="eri-20200930.xsd#eri_CaesarsRewardsProgramsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_0d46cfe1-e594-493f-8bd5-32cd9ed858c0" xlink:to="loc_eri_CaesarsRewardsProgramsMember_f49c8c71-e0c3-4a2a-b771-a441476bf1b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CustomerDepositsAndOtherDeferredRevenueMember_7105a2a4-b18a-498b-b68b-9e41427e6ec8" xlink:href="eri-20200930.xsd#eri_CustomerDepositsAndOtherDeferredRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_0d46cfe1-e594-493f-8bd5-32cd9ed858c0" xlink:to="loc_eri_CustomerDepositsAndOtherDeferredRevenueMember_7105a2a4-b18a-498b-b68b-9e41427e6ec8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AssetsHeldforSale" xlink:type="simple" xlink:href="eri-20200930.xsd#AssetsHeldforSale"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AssetsHeldforSale" xlink:type="extended" id="idff8beed08014595b5d7471f426e1f9c_AssetsHeldforSale"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AssetsHeldforSaleTables" xlink:type="simple" xlink:href="eri-20200930.xsd#AssetsHeldforSaleTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AssetsHeldforSaleTables" xlink:type="extended" id="ie38f8a061b3d47e3b4a6019fb880acd7_AssetsHeldforSaleTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AssetsHeldforSaleAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AssetsHeldforSaleAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AssetsHeldforSaleAdditionalInformationDetails" xlink:type="extended" id="i1fb93772abe74e9e8843436bc0af545d_AssetsHeldforSaleAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_1f9fadbc-0ffc-4aa6-82be-b0625ba7ff2f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_1f9fadbc-0ffc-4aa6-82be-b0625ba7ff2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_ed686341-0deb-486c-b4ff-72c0aed4fa45" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_AssetImpairmentCharges_ed686341-0deb-486c-b4ff-72c0aed4fa45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfEquityInvestments_c41e09f0-edf0-4c5a-907a-ad52f02544c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSaleOfEquityInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_GainLossOnSaleOfEquityInvestments_c41e09f0-edf0-4c5a-907a-ad52f02544c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_11add6a7-a6b5-40e1-a3cf-c8ff5a9e999c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_11add6a7-a6b5-40e1-a3cf-c8ff5a9e999c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_d9a751ff-6cdd-4d0e-828d-5db073955f24" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_d9a751ff-6cdd-4d0e-828d-5db073955f24" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_187278f3-e349-4f2f-85df-f6d056c8d3c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_187278f3-e349-4f2f-85df-f6d056c8d3c6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_379f14d9-cb0d-4fd9-a0d2-930ccc8b590c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_379f14d9-cb0d-4fd9-a0d2-930ccc8b590c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_d2ce1cdb-d223-48f2-9f59-f19da2de5f59" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_d2ce1cdb-d223-48f2-9f59-f19da2de5f59" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_1fc0d744-3e47-4903-881a-1b9760da2f01" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_dfb0d17a-9bff-464c-b80b-ff3411645ae5" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_1fc0d744-3e47-4903-881a-1b9760da2f01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_2428f6bf-59fc-454f-b3f8-bdcd080f76e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_1fc0d744-3e47-4903-881a-1b9760da2f01" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_2428f6bf-59fc-454f-b3f8-bdcd080f76e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_2428f6bf-59fc-454f-b3f8-bdcd080f76e6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_2428f6bf-59fc-454f-b3f8-bdcd080f76e6" xlink:to="loc_us-gaap_RelatedPartyDomain_2428f6bf-59fc-454f-b3f8-bdcd080f76e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_2428f6bf-59fc-454f-b3f8-bdcd080f76e6" xlink:to="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember_cc45fa8b-0a59-4d4c-b9de-fec1c57f6939" xlink:href="eri-20200930.xsd#eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:to="loc_eri_EldoradoResortCasinoShreveportJointVentureAndColumbiaPropertiesTahoeLLCMember_cc45fa8b-0a59-4d4c-b9de-fec1c57f6939" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VicksburgAndKansasCityToTwinRiverMember_ca1477c9-ef98-4ecb-adad-df520abacd81" xlink:href="eri-20200930.xsd#eri_VicksburgAndKansasCityToTwinRiverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:to="loc_eri_VicksburgAndKansasCityToTwinRiverMember_ca1477c9-ef98-4ecb-adad-df520abacd81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NemacolinMember_70124424-cac8-441e-8af5-e38e796e7c3e" xlink:href="eri-20200930.xsd#eri_NemacolinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:to="loc_eri_NemacolinMember_70124424-cac8-441e-8af5-e38e796e7c3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIPropertiesLPMember_b9900619-11e2-492e-adf5-493383d77cc6" xlink:href="eri-20200930.xsd#eri_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:to="loc_eri_VICIPropertiesLPMember_b9900619-11e2-492e-adf5-493383d77cc6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingAndLeisurePropertiesMember_a9aac4d8-e461-4de3-bb6d-d2d8815e6a36" xlink:href="eri-20200930.xsd#eri_GamingAndLeisurePropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4b2680e9-5b9a-4646-a5ac-2d3f40cc3efb" xlink:to="loc_eri_GamingAndLeisurePropertiesMember_a9aac4d8-e461-4de3-bb6d-d2d8815e6a36" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_09dbe6fc-46b0-4b91-b810-59a99a64b522" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_1fc0d744-3e47-4903-881a-1b9760da2f01" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_09dbe6fc-46b0-4b91-b810-59a99a64b522" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_09dbe6fc-46b0-4b91-b810-59a99a64b522_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_09dbe6fc-46b0-4b91-b810-59a99a64b522" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_09dbe6fc-46b0-4b91-b810-59a99a64b522_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_09dbe6fc-46b0-4b91-b810-59a99a64b522" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MontBleuCasinoResortSpaMember_6d280b03-a8a2-4b3b-9c56-37cee295e9d8" xlink:href="eri-20200930.xsd#eri_MontBleuCasinoResortSpaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:to="loc_eri_MontBleuCasinoResortSpaMember_6d280b03-a8a2-4b3b-9c56-37cee295e9d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_PresqueIsleDownsIncMember_b25fd11a-77c5-49b4-bbcc-1b718439e9e1" xlink:href="eri-20200930.xsd#eri_PresqueIsleDownsIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:to="loc_eri_PresqueIsleDownsIncMember_b25fd11a-77c5-49b4-bbcc-1b718439e9e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsRenoMember_03b9375e-a12b-4155-94e6-e01d3c6b9959" xlink:href="eri-20200930.xsd#eri_HarrahsRenoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:to="loc_eri_HarrahsRenoMember_03b9375e-a12b-4155-94e6-e01d3c6b9959" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EvansvilleMember_3ae09f59-386b-4fc5-8d3d-4621dc3044ae" xlink:href="eri-20200930.xsd#eri_EvansvilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:to="loc_eri_EvansvilleMember_3ae09f59-386b-4fc5-8d3d-4621dc3044ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VicksburgAndKansasCityMember_c5e598cb-c7b6-42a8-9ccd-94c0791a875b" xlink:href="eri-20200930.xsd#eri_VicksburgAndKansasCityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bcb1432f-a267-4cf4-8385-f468f45a433d" xlink:to="loc_eri_VicksburgAndKansasCityMember_c5e598cb-c7b6-42a8-9ccd-94c0791a875b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_3f570b97-3136-4f33-9640-b70d6a811e7c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_1fc0d744-3e47-4903-881a-1b9760da2f01" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_3f570b97-3136-4f33-9640-b70d6a811e7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_3f570b97-3136-4f33-9640-b70d6a811e7c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_3f570b97-3136-4f33-9640-b70d6a811e7c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_3f570b97-3136-4f33-9640-b70d6a811e7c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_c924a9f4-e160-4421-9ca0-9caef061ecbe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_3f570b97-3136-4f33-9640-b70d6a811e7c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_c924a9f4-e160-4421-9ca0-9caef061ecbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_e75da708-7ec8-4104-a627-f86f108c60e4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_c924a9f4-e160-4421-9ca0-9caef061ecbe" xlink:to="loc_us-gaap_SubsequentEventMember_e75da708-7ec8-4104-a627-f86f108c60e4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AssetsHeldforSaleScheduleofAssetsandLiabilitiesHeldforSaleAccountedCarryingValueLowerthanFairValueDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AssetsHeldforSaleScheduleofAssetsandLiabilitiesHeldforSaleAccountedCarryingValueLowerthanFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AssetsHeldforSaleScheduleofAssetsandLiabilitiesHeldforSaleAccountedCarryingValueLowerthanFairValueDetails" xlink:type="extended" id="ic1bd5e8d93844c53a778591a9b983983_AssetsHeldforSaleScheduleofAssetsandLiabilitiesHeldforSaleAccountedCarryingValueLowerthanFairValueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c4d2822a-df27-408c-a89b-e895fe33b036" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c4d2822a-df27-408c-a89b-e895fe33b036" xlink:to="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_00e34d07-0e78-4deb-877f-bc9292eb39c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_00e34d07-0e78-4deb-877f-bc9292eb39c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_c7966880-0aa7-48c1-9e24-91bf319a265d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_c7966880-0aa7-48c1-9e24-91bf319a265d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_a5457fe1-34e6-4352-87e0-4a7700a3ddb7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_a5457fe1-34e6-4352-87e0-4a7700a3ddb7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_181ff82d-f2e8-4ae9-9c61-aad532e7695c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_181ff82d-f2e8-4ae9-9c61-aad532e7695c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_3f7461b0-4a78-4516-90c5-3ae1442b6573" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_3f7461b0-4a78-4516-90c5-3ae1442b6573" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_42c576d9-54f6-4129-bc53-282d851c97a3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7ff557d3-d68f-47ec-9b73-ed37ba15a4a7" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_42c576d9-54f6-4129-bc53-282d851c97a3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_1f9b9064-ba96-4508-9344-fa9757a5b5d1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c4d2822a-df27-408c-a89b-e895fe33b036" xlink:to="loc_us-gaap_LiabilitiesAbstract_1f9b9064-ba96-4508-9344-fa9757a5b5d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_36b40da8-60c0-45ea-ad8b-198ee0f664c4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_1f9b9064-ba96-4508-9344-fa9757a5b5d1" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_36b40da8-60c0-45ea-ad8b-198ee0f664c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_475993ca-c925-4d3c-8e23-685850448a6f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_1f9b9064-ba96-4508-9344-fa9757a5b5d1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_475993ca-c925-4d3c-8e23-685850448a6f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_13ca17d2-0ff6-4cb5-b176-17f525751425" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_1f9b9064-ba96-4508-9344-fa9757a5b5d1" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_13ca17d2-0ff6-4cb5-b176-17f525751425" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_52606ecf-8dd6-4562-87d5-fbfba5525c60" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c4d2822a-df27-408c-a89b-e895fe33b036" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_52606ecf-8dd6-4562-87d5-fbfba5525c60" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_098b59e3-5d87-4399-a06a-921503a2f097" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_52606ecf-8dd6-4562-87d5-fbfba5525c60" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_098b59e3-5d87-4399-a06a-921503a2f097" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_098b59e3-5d87-4399-a06a-921503a2f097_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_098b59e3-5d87-4399-a06a-921503a2f097" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_098b59e3-5d87-4399-a06a-921503a2f097_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_098b59e3-5d87-4399-a06a-921503a2f097" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EldoradoResortCasinoShreveportMember_d5ae5905-179c-45af-a825-a01cf930ac00" xlink:href="eri-20200930.xsd#eri_EldoradoResortCasinoShreveportMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_EldoradoResortCasinoShreveportMember_d5ae5905-179c-45af-a825-a01cf930ac00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MontBleuCasinoResortSpaMember_102d4959-647a-48e3-b960-68244aa253e4" xlink:href="eri-20200930.xsd#eri_MontBleuCasinoResortSpaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_MontBleuCasinoResortSpaMember_102d4959-647a-48e3-b960-68244aa253e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EvansvilleMember_5871f2ba-e3f6-4345-96fc-76dc3bb3d939" xlink:href="eri-20200930.xsd#eri_EvansvilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_EvansvilleMember_5871f2ba-e3f6-4345-96fc-76dc3bb3d939" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_KansasCityMember_8b066c09-54a0-4bfe-b94f-b0d9c0188c2c" xlink:href="eri-20200930.xsd#eri_KansasCityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_KansasCityMember_8b066c09-54a0-4bfe-b94f-b0d9c0188c2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VicksburgMember_715b9b27-9fcd-474a-8d4f-f4c16f194488" xlink:href="eri-20200930.xsd#eri_VicksburgMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_VicksburgMember_715b9b27-9fcd-474a-8d4f-f4c16f194488" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsLouisianaDownsMember_1fa810a3-c5c2-4bac-9885-98f7e59568d3" xlink:href="eri-20200930.xsd#eri_HarrahsLouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_HarrahsLouisianaDownsMember_1fa810a3-c5c2-4bac-9885-98f7e59568d3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeHammondMember_d338647a-f943-4ebe-911c-602bd6b141f7" xlink:href="eri-20200930.xsd#eri_HorseshoeHammondMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_HorseshoeHammondMember_d338647a-f943-4ebe-911c-602bd6b141f7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsUKMember_7a048094-390b-45aa-bc97-0bcd8720d991" xlink:href="eri-20200930.xsd#eri_CaesarsUKMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_CaesarsUKMember_7a048094-390b-45aa-bc97-0bcd8720d991" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BallysACMember_3536056d-6ac8-4f17-994e-cfef7a43e120" xlink:href="eri-20200930.xsd#eri_BallysACMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_BallysACMember_3536056d-6ac8-4f17-994e-cfef7a43e120" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsSouthernIndianaMember_669a3efa-8f36-49bf-bb23-85fe2f776f0c" xlink:href="eri-20200930.xsd#eri_CaesarsSouthernIndianaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b01bdb35-0c8f-42b0-a172-7684eebfc45f" xlink:to="loc_eri_CaesarsSouthernIndianaMember_669a3efa-8f36-49bf-bb23-85fe2f776f0c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_640b3616-f47d-4c9b-9665-e3c81e7b976d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_52606ecf-8dd6-4562-87d5-fbfba5525c60" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_640b3616-f47d-4c9b-9665-e3c81e7b976d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_640b3616-f47d-4c9b-9665-e3c81e7b976d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_640b3616-f47d-4c9b-9665-e3c81e7b976d" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_640b3616-f47d-4c9b-9665-e3c81e7b976d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_a152b8d6-364f-4517-b778-4468ab70afb4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_640b3616-f47d-4c9b-9665-e3c81e7b976d" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_a152b8d6-364f-4517-b778-4468ab70afb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_a956cb67-9f63-4234-8735-6827659321c8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_a152b8d6-364f-4517-b778-4468ab70afb4" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_a956cb67-9f63-4234-8735-6827659321c8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/AssetsHeldforSaleScheduleofInformationofNetRevenuesandNetIncomeLossDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#AssetsHeldforSaleScheduleofInformationofNetRevenuesandNetIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/AssetsHeldforSaleScheduleofInformationofNetRevenuesandNetIncomeLossDetails" xlink:type="extended" id="ic7f4e19d9f7d4a059f94ba6b4a6ca03d_AssetsHeldforSaleScheduleofInformationofNetRevenuesandNetIncomeLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_762854de-bf34-47a0-a1df-3815adaec6ed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_ed997c7d-26b2-408a-8e90-a5e399f555ec" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_762854de-bf34-47a0-a1df-3815adaec6ed" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_ed997c7d-26b2-408a-8e90-a5e399f555ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DisposalGroupIncludingDiscontinuedOperationNetIncomeLoss_f62d232b-441e-4a3d-b0d7-1757534b65fd" xlink:href="eri-20200930.xsd#eri_DisposalGroupIncludingDiscontinuedOperationNetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_762854de-bf34-47a0-a1df-3815adaec6ed" xlink:to="loc_eri_DisposalGroupIncludingDiscontinuedOperationNetIncomeLoss_f62d232b-441e-4a3d-b0d7-1757534b65fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DeferredFinanceObligation_0b4f4f0a-b377-47b1-a5fa-85c58c92c755" xlink:href="eri-20200930.xsd#eri_DeferredFinanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_762854de-bf34-47a0-a1df-3815adaec6ed" xlink:to="loc_eri_DeferredFinanceObligation_0b4f4f0a-b377-47b1-a5fa-85c58c92c755" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_570a83e4-27fe-4361-a590-3911c667e75d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_762854de-bf34-47a0-a1df-3815adaec6ed" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_570a83e4-27fe-4361-a590-3911c667e75d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b2bf14b0-949a-4017-b520-16894f78acf6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_570a83e4-27fe-4361-a590-3911c667e75d" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b2bf14b0-949a-4017-b520-16894f78acf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b2bf14b0-949a-4017-b520-16894f78acf6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b2bf14b0-949a-4017-b520-16894f78acf6" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b2bf14b0-949a-4017-b520-16894f78acf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b2bf14b0-949a-4017-b520-16894f78acf6" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EldoradoResortCasinoShreveportMember_fc8243d4-1dae-4c6f-ac0f-acb57f48d769" xlink:href="eri-20200930.xsd#eri_EldoradoResortCasinoShreveportMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_EldoradoResortCasinoShreveportMember_fc8243d4-1dae-4c6f-ac0f-acb57f48d769" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MontBleuCasinoResortSpaMember_ea20f4f3-faaf-4d43-ab5c-d31847685869" xlink:href="eri-20200930.xsd#eri_MontBleuCasinoResortSpaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_MontBleuCasinoResortSpaMember_ea20f4f3-faaf-4d43-ab5c-d31847685869" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EvansvilleMember_5002fde5-ddad-4437-a9c4-7bfc8309cd7b" xlink:href="eri-20200930.xsd#eri_EvansvilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_EvansvilleMember_5002fde5-ddad-4437-a9c4-7bfc8309cd7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MountaineerMember_68ba3691-ba53-438b-90f0-7fa7ad0e152c" xlink:href="eri-20200930.xsd#eri_MountaineerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_MountaineerMember_68ba3691-ba53-438b-90f0-7fa7ad0e152c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CapeGirardeauMember_095854f9-29bb-4b09-ac0e-2b2135d24a6e" xlink:href="eri-20200930.xsd#eri_CapeGirardeauMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_CapeGirardeauMember_095854f9-29bb-4b09-ac0e-2b2135d24a6e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaruthersvilleMember_caf6e2ed-640d-4e96-a744-76d348d32fb2" xlink:href="eri-20200930.xsd#eri_CaruthersvilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_CaruthersvilleMember_caf6e2ed-640d-4e96-a744-76d348d32fb2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_KansasCityMember_1f26ae9d-09ec-443b-847c-482d2579a25e" xlink:href="eri-20200930.xsd#eri_KansasCityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_KansasCityMember_1f26ae9d-09ec-443b-847c-482d2579a25e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VicksburgMember_625a57e5-09e9-499b-a77f-3268ff10f18f" xlink:href="eri-20200930.xsd#eri_VicksburgMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_VicksburgMember_625a57e5-09e9-499b-a77f-3268ff10f18f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_PresqueIsleDownsIncMember_9345866f-b2ce-4d04-936b-f5136b787fb8" xlink:href="eri-20200930.xsd#eri_PresqueIsleDownsIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_PresqueIsleDownsIncMember_9345866f-b2ce-4d04-936b-f5136b787fb8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NemacolinMember_aea60ef5-7865-4386-b1a6-1600087b2e39" xlink:href="eri-20200930.xsd#eri_NemacolinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_NemacolinMember_aea60ef5-7865-4386-b1a6-1600087b2e39" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsLouisianaDownsMember_cab10d5b-1ba5-4688-919f-37455e0dc67c" xlink:href="eri-20200930.xsd#eri_HarrahsLouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_HarrahsLouisianaDownsMember_cab10d5b-1ba5-4688-919f-37455e0dc67c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsRenoMember_4270badb-d518-42c9-9ff6-526460661b80" xlink:href="eri-20200930.xsd#eri_HarrahsRenoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_HarrahsRenoMember_4270badb-d518-42c9-9ff6-526460661b80" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeHammondMember_b9af71db-7730-4a24-9cdb-f013dc6c5bf1" xlink:href="eri-20200930.xsd#eri_HorseshoeHammondMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_HorseshoeHammondMember_b9af71db-7730-4a24-9cdb-f013dc6c5bf1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsUKMember_412538d6-5a8e-43da-a9e4-5260e2e11eaa" xlink:href="eri-20200930.xsd#eri_CaesarsUKMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_CaesarsUKMember_412538d6-5a8e-43da-a9e4-5260e2e11eaa" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_BallysACMember_069b6aab-02f8-4fae-a70f-cd3f665e1607" xlink:href="eri-20200930.xsd#eri_BallysACMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_BallysACMember_069b6aab-02f8-4fae-a70f-cd3f665e1607" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsSouthernIndianaMember_691a66d9-1592-448e-9f2c-87fbdae25bee" xlink:href="eri-20200930.xsd#eri_CaesarsSouthernIndianaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0fd5452d-0e07-4cf3-bf03-44b004498627" xlink:to="loc_eri_CaesarsSouthernIndianaMember_691a66d9-1592-448e-9f2c-87fbdae25bee" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_ec5c295b-8f59-4013-9146-050b7d2d16df" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_570a83e4-27fe-4361-a590-3911c667e75d" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_ec5c295b-8f59-4013-9146-050b7d2d16df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_ec5c295b-8f59-4013-9146-050b7d2d16df_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_ec5c295b-8f59-4013-9146-050b7d2d16df" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_ec5c295b-8f59-4013-9146-050b7d2d16df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_566c5ae8-1bf3-47da-ba15-7d651eff1894" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_ec5c295b-8f59-4013-9146-050b7d2d16df" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_566c5ae8-1bf3-47da-ba15-7d651eff1894" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_66bafff5-084b-4b2f-8d0d-ec911b6b6eff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_566c5ae8-1bf3-47da-ba15-7d651eff1894" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_66bafff5-084b-4b2f-8d0d-ec911b6b6eff" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquity" xlink:type="simple" xlink:href="eri-20200930.xsd#StockBasedCompensationandStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquity" xlink:type="extended" id="icf0b5490adc24be7945db0916665b7cc_StockBasedCompensationandStockholdersEquity"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityTables" xlink:type="simple" xlink:href="eri-20200930.xsd#StockBasedCompensationandStockholdersEquityTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityTables" xlink:type="extended" id="i208d07cb675a4c7dae8de8f764b6883d_StockBasedCompensationandStockholdersEquityTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#StockBasedCompensationandStockholdersEquityAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityAdditionalInformationDetails" xlink:type="extended" id="ic73ab21a4c3b4219a7e557760ba2087f_StockBasedCompensationandStockholdersEquityAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_626f612f-be0a-4674-9c6d-37ab8f464f68" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_626f612f-be0a-4674-9c6d-37ab8f464f68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_3888abc9-fc2b-4ba2-8b07-eee7dd297e08" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_3888abc9-fc2b-4ba2-8b07-eee7dd297e08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_af306c7f-5f01-4aed-8f68-9f93572521d4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_af306c7f-5f01-4aed-8f68-9f93572521d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_4ad8a346-25d4-4bd0-89c0-ad5fd4917cbb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_4ad8a346-25d4-4bd0-89c0-ad5fd4917cbb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_f8af05b0-0388-48b9-8d65-4979bbc63a4a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_f8af05b0-0388-48b9-8d65-4979bbc63a4a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockShares_757029cc-670b-45f8-b350-2e1742593764" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_TreasuryStockShares_757029cc-670b-45f8-b350-2e1742593764" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_8d51f6a1-08af-4e15-96da-076488781339" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_8d51f6a1-08af-4e15-96da-076488781339" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_d6530b75-c7f6-40de-9627-44f9ba468eff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_d6530b75-c7f6-40de-9627-44f9ba468eff" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_d6afb9e0-541a-4167-b7a2-9650d8bafbd1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_d6afb9e0-541a-4167-b7a2-9650d8bafbd1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_056098fa-f97c-48e0-9f0a-768b9a7bcf73" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_056098fa-f97c-48e0-9f0a-768b9a7bcf73" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_df301a58-2815-4965-bbfb-0d1572cb4433" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_df301a58-2815-4965-bbfb-0d1572cb4433" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2addc263-0396-40f6-9ed4-9df9f0123466" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2addc263-0396-40f6-9ed4-9df9f0123466" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_75e71a83-6814-4f6f-bd02-94053e4cb5b5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_75e71a83-6814-4f6f-bd02-94053e4cb5b5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_8e5e6a73-51ce-4f3d-9496-ed466858ee0f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_8e5e6a73-51ce-4f3d-9496-ed466858ee0f" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_83749b10-8e89-45be-a5ac-12d722f8e1a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_83749b10-8e89-45be-a5ac-12d722f8e1a7" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_3228f87f-fa28-41c4-b3de-ee7db4f6b300" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_3228f87f-fa28-41c4-b3de-ee7db4f6b300" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01d106d7-71fa-48f8-93a3-435463a20560" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01d106d7-71fa-48f8-93a3-435463a20560" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_c0408a3d-8497-4f5d-ba64-3a4e4c26ebc2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_c0408a3d-8497-4f5d-ba64-3a4e4c26ebc2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_d48d9940-d646-4c2f-b127-5b324d629254" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_d48d9940-d646-4c2f-b127-5b324d629254" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_cb67529a-cddd-4486-ad6d-aa1e175fad23" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_cb67529a-cddd-4486-ad6d-aa1e175fad23" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_def6ec5f-be60-46be-b7ca-127ca15a33ac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_def6ec5f-be60-46be-b7ca-127ca15a33ac" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6e59eaa0-ee61-47f0-b689-9aa64c6742df" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_45b23d6a-8e52-4c23-82ed-e71eb7dee086" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_45b23d6a-8e52-4c23-82ed-e71eb7dee086" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_45b23d6a-8e52-4c23-82ed-e71eb7dee086_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_45b23d6a-8e52-4c23-82ed-e71eb7dee086" xlink:to="loc_us-gaap_EquityComponentDomain_45b23d6a-8e52-4c23-82ed-e71eb7dee086_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_bf0978a2-27bc-4cb8-92c1-564d6e82abc3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_45b23d6a-8e52-4c23-82ed-e71eb7dee086" xlink:to="loc_us-gaap_EquityComponentDomain_bf0978a2-27bc-4cb8-92c1-564d6e82abc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_94cbdb31-e021-454d-aed6-ff693abfb07a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_bf0978a2-27bc-4cb8-92c1-564d6e82abc3" xlink:to="loc_us-gaap_CommonStockMember_94cbdb31-e021-454d-aed6-ff693abfb07a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_6a60b920-f8ce-48b2-b382-795b97ad82c5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:to="loc_us-gaap_AwardTypeAxis_6a60b920-f8ce-48b2-b382-795b97ad82c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6a60b920-f8ce-48b2-b382-795b97ad82c5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_6a60b920-f8ce-48b2-b382-795b97ad82c5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6a60b920-f8ce-48b2-b382-795b97ad82c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_35c70bcf-9a9d-408d-9b4a-65f50e1fdec2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_6a60b920-f8ce-48b2-b382-795b97ad82c5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_35c70bcf-9a9d-408d-9b4a-65f50e1fdec2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_ba9058c5-bb4d-4d4b-a412-b448656b8541" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_35c70bcf-9a9d-408d-9b4a-65f50e1fdec2" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_ba9058c5-bb4d-4d4b-a412-b448656b8541" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_4a8e17d2-3194-44a7-bdc3-cb984f1f4a75" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_35c70bcf-9a9d-408d-9b4a-65f50e1fdec2" xlink:to="loc_us-gaap_PerformanceSharesMember_4a8e17d2-3194-44a7-bdc3-cb984f1f4a75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MarketBasedStockUnitsMember_7ba4135a-5bf6-44b8-bbc1-ecd5df6a5617" xlink:href="eri-20200930.xsd#eri_MarketBasedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_35c70bcf-9a9d-408d-9b4a-65f50e1fdec2" xlink:to="loc_eri_MarketBasedStockUnitsMember_7ba4135a-5bf6-44b8-bbc1-ecd5df6a5617" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_ed39af88-e4ee-48f1-9210-4617dfb08667" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_ed39af88-e4ee-48f1-9210-4617dfb08667" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ed39af88-e4ee-48f1-9210-4617dfb08667_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_ed39af88-e4ee-48f1-9210-4617dfb08667" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ed39af88-e4ee-48f1-9210-4617dfb08667_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_7bea8963-374a-4b39-834b-3259ec8d1171" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_ed39af88-e4ee-48f1-9210-4617dfb08667" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_7bea8963-374a-4b39-834b-3259ec8d1171" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_PublicStockOfferingMember_5ff0f078-423c-485b-b57e-e2d5caa3b782" xlink:href="eri-20200930.xsd#eri_PublicStockOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_7bea8963-374a-4b39-834b-3259ec8d1171" xlink:to="loc_eri_PublicStockOfferingMember_5ff0f078-423c-485b-b57e-e2d5caa3b782" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_478fa573-cec6-461a-9d1f-38671b676255" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_478fa573-cec6-461a-9d1f-38671b676255" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_478fa573-cec6-461a-9d1f-38671b676255_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_478fa573-cec6-461a-9d1f-38671b676255" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_478fa573-cec6-461a-9d1f-38671b676255_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_75d2488c-cc7d-4adc-bd25-66e81a8a2ffd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_478fa573-cec6-461a-9d1f-38671b676255" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_75d2488c-cc7d-4adc-bd25-66e81a8a2ffd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_8e32e4c5-9ba2-408b-8a52-e66e11f02b59" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_75d2488c-cc7d-4adc-bd25-66e81a8a2ffd" xlink:to="loc_us-gaap_SubsequentEventMember_8e32e4c5-9ba2-408b-8a52-e66e11f02b59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_69c7a182-cd2e-4e01-aca1-2834ea17caef" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bff31df3-7633-4e21-8c8f-30b1ee07b457" xlink:to="loc_srt_RangeAxis_69c7a182-cd2e-4e01-aca1-2834ea17caef" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_69c7a182-cd2e-4e01-aca1-2834ea17caef_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_69c7a182-cd2e-4e01-aca1-2834ea17caef" xlink:to="loc_srt_RangeMember_69c7a182-cd2e-4e01-aca1-2834ea17caef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_de658415-d8bb-4c62-b980-10c63dad807b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_69c7a182-cd2e-4e01-aca1-2834ea17caef" xlink:to="loc_srt_RangeMember_de658415-d8bb-4c62-b980-10c63dad807b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b286a271-4ba9-4c13-a2d3-97bbb958f865" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de658415-d8bb-4c62-b980-10c63dad807b" xlink:to="loc_srt_MinimumMember_b286a271-4ba9-4c13-a2d3-97bbb958f865" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_611fee08-18e7-4de7-89c2-50f177ab8b12" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de658415-d8bb-4c62-b980-10c63dad807b" xlink:to="loc_srt_MaximumMember_611fee08-18e7-4de7-89c2-50f177ab8b12" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationRestrictedStockUnitsActivityDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationRestrictedStockUnitsActivityDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationRestrictedStockUnitsActivityDetails" xlink:type="extended" id="i3bc4d8da369340f49ba9c968f9e21f60_StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationRestrictedStockUnitsActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_77adf83e-ed56-4320-94b8-df8453d5e7a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_77adf83e-ed56-4320-94b8-df8453d5e7a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_30957201-79b8-4c46-b016-d13927b73df7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_30957201-79b8-4c46-b016-d13927b73df7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_8c5b0849-d3a4-47c1-bf34-738eeb56c35e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_8c5b0849-d3a4-47c1-bf34-738eeb56c35e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod_2858c243-ded1-4020-9773-c6aaabb3557c" xlink:href="eri-20200930.xsd#eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:to="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod_2858c243-ded1-4020-9773-c6aaabb3557c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_fad99ee4-b476-4616-b351-cacb66cd4d30" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_fad99ee4-b476-4616-b351-cacb66cd4d30" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_feb2a30e-dd55-48d6-8eec-4180a2379c6d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_66ed6d3a-9c49-4a18-a246-e9fff8bd6c1e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_feb2a30e-dd55-48d6-8eec-4180a2379c6d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_6a99312a-b7a6-46ea-a6cb-e331bfb4677d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_77adf83e-ed56-4320-94b8-df8453d5e7a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_7e59f1fe-fc57-49a8-adef-02bc02222988" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_7e59f1fe-fc57-49a8-adef-02bc02222988" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_e02a4c5d-4009-4143-8f86-b27e56402aaa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_e02a4c5d-4009-4143-8f86-b27e56402aaa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue_b122af16-799e-4c4b-b6b6-0ba3bc8bc8e4" xlink:href="eri-20200930.xsd#eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:to="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue_b122af16-799e-4c4b-b6b6-0ba3bc8bc8e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_3db77821-8f9b-452c-a73b-27b0711e5ff8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_3db77821-8f9b-452c-a73b-27b0711e5ff8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0303a3b4-eb20-4122-8370-cd548fd8dc76" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_7cef9d43-ca02-4caf-8850-a781b42f756f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0303a3b4-eb20-4122-8370-cd548fd8dc76" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_f2231452-9ca4-4cf6-bff8-3f30e9e45cd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fa907dec-e7fc-41c8-ba88-2c6be478793d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_77adf83e-ed56-4320-94b8-df8453d5e7a9" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fa907dec-e7fc-41c8-ba88-2c6be478793d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_2fc3d7bc-40bd-4746-a0db-b51360478bcb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fa907dec-e7fc-41c8-ba88-2c6be478793d" xlink:to="loc_us-gaap_AwardTypeAxis_2fc3d7bc-40bd-4746-a0db-b51360478bcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2fc3d7bc-40bd-4746-a0db-b51360478bcb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_2fc3d7bc-40bd-4746-a0db-b51360478bcb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2fc3d7bc-40bd-4746-a0db-b51360478bcb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_571dd3cc-9fa6-4dc0-afb3-69586bfaf85d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_2fc3d7bc-40bd-4746-a0db-b51360478bcb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_571dd3cc-9fa6-4dc0-afb3-69586bfaf85d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_a600b0d8-8024-4b86-8c76-fb66df4a8c3f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_571dd3cc-9fa6-4dc0-afb3-69586bfaf85d" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_a600b0d8-8024-4b86-8c76-fb66df4a8c3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MarketBasedStockUnitsMember_4dad218a-12cf-4357-b04b-dfccb5ee03ff" xlink:href="eri-20200930.xsd#eri_MarketBasedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_571dd3cc-9fa6-4dc0-afb3-69586bfaf85d" xlink:to="loc_eri_MarketBasedStockUnitsMember_4dad218a-12cf-4357-b04b-dfccb5ee03ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_26b9ca60-ec49-4958-96f1-f24a3ed5f50e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fa907dec-e7fc-41c8-ba88-2c6be478793d" xlink:to="loc_srt_TitleOfIndividualAxis_26b9ca60-ec49-4958-96f1-f24a3ed5f50e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_26b9ca60-ec49-4958-96f1-f24a3ed5f50e_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_26b9ca60-ec49-4958-96f1-f24a3ed5f50e" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_26b9ca60-ec49-4958-96f1-f24a3ed5f50e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_bc96af01-6b1f-41b2-83cc-b9fa99fd1cc2" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_26b9ca60-ec49-4958-96f1-f24a3ed5f50e" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_bc96af01-6b1f-41b2-83cc-b9fa99fd1cc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NonEmployeeMembersOfBODMember_2adf50b5-18ba-45e0-80f7-1e9258bd920d" xlink:href="eri-20200930.xsd#eri_NonEmployeeMembersOfBODMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_bc96af01-6b1f-41b2-83cc-b9fa99fd1cc2" xlink:to="loc_eri_NonEmployeeMembersOfBODMember_2adf50b5-18ba-45e0-80f7-1e9258bd920d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationMarketStockUnitsActivityDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationMarketStockUnitsActivityDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationMarketStockUnitsActivityDetails" xlink:type="extended" id="i458026d9a74a413ebf52c6d02eac54ac_StockBasedCompensationandStockholdersEquityScheduleofSharebasedCompensationMarketStockUnitsActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4bf9b1e5-d41a-4e03-aa7c-69b6cdfc6562" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4bf9b1e5-d41a-4e03-aa7c-69b6cdfc6562" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_6dd7a071-acfe-4758-8e4a-cac1c9f6b8d2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_6dd7a071-acfe-4758-8e4a-cac1c9f6b8d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_47d05329-9f15-47b0-8242-5a7f1877ad31" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_47d05329-9f15-47b0-8242-5a7f1877ad31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod_49cc6ace-a3d1-4b7c-b64c-ac9c06c873b7" xlink:href="eri-20200930.xsd#eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriod_49cc6ace-a3d1-4b7c-b64c-ac9c06c873b7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_1a8d3560-650a-4db1-aae4-a0d65538831d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_1a8d3560-650a-4db1-aae4-a0d65538831d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_74cfe13d-6f0f-4e63-bc17-b26e1aea42a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_74cfe13d-6f0f-4e63-bc17-b26e1aea42a9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_e80c9b46-1c43-4fac-8369-5b18d1779404" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_483ccca6-2d2c-4eba-a26d-e7b30b8889f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_e80c9b46-1c43-4fac-8369-5b18d1779404" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4bf9b1e5-d41a-4e03-aa7c-69b6cdfc6562" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_dcd9b906-6f86-4fc1-bc59-86ad069f612a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4ef7e067-f988-4997-8fe0-2ee2ba5e26cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4ef7e067-f988-4997-8fe0-2ee2ba5e26cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue_1d5500ca-fcab-4bb8-b752-4ab3f52480d5" xlink:href="eri-20200930.xsd#eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:to="loc_eri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquisitionsInPeriodWeightedAverageGrantDateFairValue_1d5500ca-fcab-4bb8-b752-4ab3f52480d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_78168207-0ee9-46c4-bb37-ab58bdc1e3bc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_78168207-0ee9-46c4-bb37-ab58bdc1e3bc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_1d67c1b2-f2b9-4d90-b138-8f8a6a112b6c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_94cc2a6c-2e8c-4c1e-9430-6913730f6b5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_1d67c1b2-f2b9-4d90-b138-8f8a6a112b6c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_56cb86f9-b269-43dc-8dae-438585fe09fc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a150c143-8292-42ba-bbf5-5a079647a40d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4bf9b1e5-d41a-4e03-aa7c-69b6cdfc6562" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a150c143-8292-42ba-bbf5-5a079647a40d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_1f083ba6-413c-4b83-8efe-aa450c218206" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a150c143-8292-42ba-bbf5-5a079647a40d" xlink:to="loc_us-gaap_AwardTypeAxis_1f083ba6-413c-4b83-8efe-aa450c218206" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1f083ba6-413c-4b83-8efe-aa450c218206_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_1f083ba6-413c-4b83-8efe-aa450c218206" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1f083ba6-413c-4b83-8efe-aa450c218206_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cff4296a-7640-4ea3-b166-fdf5f49047ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_1f083ba6-413c-4b83-8efe-aa450c218206" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cff4296a-7640-4ea3-b166-fdf5f49047ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MarketBasedStockUnitsMember_04f72ee0-b3ac-44e2-9ea8-c4d7e97eecca" xlink:href="eri-20200930.xsd#eri_MarketBasedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cff4296a-7640-4ea3-b166-fdf5f49047ba" xlink:to="loc_eri_MarketBasedStockUnitsMember_04f72ee0-b3ac-44e2-9ea8-c4d7e97eecca" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/InvestmentsinandAdvancestoUnconsolidatedAffiliates" xlink:type="simple" xlink:href="eri-20200930.xsd#InvestmentsinandAdvancestoUnconsolidatedAffiliates"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/InvestmentsinandAdvancestoUnconsolidatedAffiliates" xlink:type="extended" id="i31694ab3b0c34268a1a7c86f0934226a_InvestmentsinandAdvancestoUnconsolidatedAffiliates"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/InvestmentsinandAdvancestoUnconsolidatedAffiliatesAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#InvestmentsinandAdvancestoUnconsolidatedAffiliatesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/InvestmentsinandAdvancestoUnconsolidatedAffiliatesAdditionalInformationDetails" xlink:type="extended" id="ibcca09c27bb3401daa6760e0a30abd20_InvestmentsinandAdvancestoUnconsolidatedAffiliatesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AgreementPeriod_ac1ce694-b768-467d-9f45-1a248808a839" xlink:href="eri-20200930.xsd#eri_AgreementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_eri_AgreementPeriod_ac1ce694-b768-467d-9f45-1a248808a839" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_dc2b1eb6-e6d8-4e8b-9cfe-1cb1e48d6534" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_dc2b1eb6-e6d8-4e8b-9cfe-1cb1e48d6534" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EquityMethodInvestmentsValueInCommonShares_1d5b9d1a-3018-4515-83da-6bad5023aa50" xlink:href="eri-20200930.xsd#eri_EquityMethodInvestmentsValueInCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_eri_EquityMethodInvestmentsValueInCommonShares_1d5b9d1a-3018-4515-83da-6bad5023aa50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromAffiliateCurrent_6bdf7cd0-9412-4dc7-b452-a0a1709b91f6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueFromAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_DueFromAffiliateCurrent_6bdf7cd0-9412-4dc7-b452-a0a1709b91f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_0a741fae-9815-4bd1-9e8d-be5e4c01ffef" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_EquityMethodInvestments_0a741fae-9815-4bd1-9e8d-be5e4c01ffef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_9cebbe4d-d967-4bcf-8dc2-565129ab1bf4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_9cebbe4d-d967-4bcf-8dc2-565129ab1bf4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRestricted_ed311421-44fa-4330-8633-982dc6e8575f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNiRestricted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRestricted_ed311421-44fa-4330-8633-982dc6e8575f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_17d57fb2-6365-440d-a2d6-01c12cb61490" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_17d57fb2-6365-440d-a2d6-01c12cb61490" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnInvestments_be354252-6b6d-4a73-aee9-092961932153" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrealizedGainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_UnrealizedGainLossOnInvestments_be354252-6b6d-4a73-aee9-092961932153" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RevenueRecognizedStraightLineBasisOverPeriod_ff5fe3ed-cc2b-4f52-8000-15e5f2909e0c" xlink:href="eri-20200930.xsd#eri_RevenueRecognizedStraightLineBasisOverPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_eri_RevenueRecognizedStraightLineBasisOverPeriod_ff5fe3ed-cc2b-4f52-8000-15e5f2909e0c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_1cadaead-0151-4bb9-8c98-3c18ebba0bc4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_1cadaead-0151-4bb9-8c98-3c18ebba0bc4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRevenueNoncurrent_c141dcd8-7883-4827-84af-9a9b6274781d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredRevenueNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_DeferredRevenueNoncurrent_c141dcd8-7883-4827-84af-9a9b6274781d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_b6f8d7e7-a508-4fc5-8aa9-fe4f8c3f55ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_9ce8a1be-b605-40af-bc11-e4990572768f" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_b6f8d7e7-a508-4fc5-8aa9-fe4f8c3f55ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_03828190-b887-4a95-b751-3163023e8c39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_b6f8d7e7-a508-4fc5-8aa9-fe4f8c3f55ba" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_03828190-b887-4a95-b751-3163023e8c39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_03828190-b887-4a95-b751-3163023e8c39_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_03828190-b887-4a95-b751-3163023e8c39" xlink:to="loc_us-gaap_RelatedPartyDomain_03828190-b887-4a95-b751-3163023e8c39_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_aed813b2-fe5e-4ea9-b38e-6fcc3dd4536f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_03828190-b887-4a95-b751-3163023e8c39" xlink:to="loc_us-gaap_RelatedPartyDomain_aed813b2-fe5e-4ea9-b38e-6fcc3dd4536f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillMember_fcdb0bd6-0ade-474d-9d2f-8eb2347e2fba" xlink:href="eri-20200930.xsd#eri_WilliamHillMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_aed813b2-fe5e-4ea9-b38e-6fcc3dd4536f" xlink:to="loc_eri_WilliamHillMember_fcdb0bd6-0ade-474d-9d2f-8eb2347e2fba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillUSMember_c744e03c-9b4d-4453-bbfe-ea0d6f57b88a" xlink:href="eri-20200930.xsd#eri_WilliamHillUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_aed813b2-fe5e-4ea9-b38e-6fcc3dd4536f" xlink:to="loc_eri_WilliamHillUSMember_c744e03c-9b4d-4453-bbfe-ea0d6f57b88a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_WilliamHillPLCMember_ee7bca7e-5796-4413-ac3d-6ad66bcee8c9" xlink:href="eri-20200930.xsd#eri_WilliamHillPLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_aed813b2-fe5e-4ea9-b38e-6fcc3dd4536f" xlink:to="loc_eri_WilliamHillPLCMember_ee7bca7e-5796-4413-ac3d-6ad66bcee8c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_1bb4a6fa-e859-4a03-855f-3fdbec437593" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_b6f8d7e7-a508-4fc5-8aa9-fe4f8c3f55ba" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_1bb4a6fa-e859-4a03-855f-3fdbec437593" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_1bb4a6fa-e859-4a03-855f-3fdbec437593_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1bb4a6fa-e859-4a03-855f-3fdbec437593" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_1bb4a6fa-e859-4a03-855f-3fdbec437593_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_1b05ce24-ce8f-489d-a08f-bf5123ca8d78" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1bb4a6fa-e859-4a03-855f-3fdbec437593" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_1b05ce24-ce8f-489d-a08f-bf5123ca8d78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_6dcd5a81-c1ab-44f2-b390-b59416dde22d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_1b05ce24-ce8f-489d-a08f-bf5123ca8d78" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_6dcd5a81-c1ab-44f2-b390-b59416dde22d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnet" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnet"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnet" xlink:type="extended" id="ibd89d66e28e643f1b082a50db4738613_GoodwillandIntangibleAssetsnet"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetTables" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetTables" xlink:type="extended" id="i3bbde0969f1e446abc2031ebea824c7c_GoodwillandIntangibleAssetsnetTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofGoodwillandOtherIntangibleAssetsNetDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetScheduleofGoodwillandOtherIntangibleAssetsNetDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofGoodwillandOtherIntangibleAssetsNetDetails" xlink:type="extended" id="i5602395b28d34108b4533c17067654d2_GoodwillandIntangibleAssetsnetScheduleofGoodwillandOtherIntangibleAssetsNetDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_6e5c1e6e-8732-44ed-9227-98d44afe5575" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_6e5c1e6e-8732-44ed-9227-98d44afe5575" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_dc4001e0-d9f8-479c-a426-97e591dcc62a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_dc4001e0-d9f8-479c-a426-97e591dcc62a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_5a6fc4b4-f49c-4879-ab6e-147e7c7dd910" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_5a6fc4b4-f49c-4879-ab6e-147e7c7dd910" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_fa95c832-ac19-4bfc-a54a-f0441dbb26d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_fa95c832-ac19-4bfc-a54a-f0441dbb26d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_1b1a21c0-b853-4c06-b6a7-41ab937d5bcd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_1b1a21c0-b853-4c06-b6a7-41ab937d5bcd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AmortizingIntangibleAssetsHeldForSale_839e878d-51f4-4751-a9e7-063cc7d8a15d" xlink:href="eri-20200930.xsd#eri_AmortizingIntangibleAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_dd1a2c06-3d39-4911-9d2d-cc067be551d6" xlink:to="loc_eri_AmortizingIntangibleAssetsHeldForSale_839e878d-51f4-4751-a9e7-063cc7d8a15d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a80bb041-ffb3-4614-a7b3-94d832988d47" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_6e5c1e6e-8732-44ed-9227-98d44afe5575" xlink:to="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_4b2bd8c8-a5f8-4171-be9e-852ef5e07da9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:to="loc_us-gaap_GoodwillGross_4b2bd8c8-a5f8-4171-be9e-852ef5e07da9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_51fa2b89-60d1-498a-83a2-75625c5629ab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_51fa2b89-60d1-498a-83a2-75625c5629ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_41b5ffcd-d550-43d5-8c80-e2beed124ef5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_41b5ffcd-d550-43d5-8c80-e2beed124ef5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GoodwillAssetsHeldForSale_38ceed40-91f6-4831-b353-0604b5eb3241" xlink:href="eri-20200930.xsd#eri_GoodwillAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_ff611c8c-8e38-44c0-b9aa-e99363519c8b" xlink:to="loc_eri_GoodwillAssetsHeldForSale_38ceed40-91f6-4831-b353-0604b5eb3241" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_e7dfd23e-c4fc-4812-8716-d89a52d08852" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_6e5c1e6e-8732-44ed-9227-98d44afe5575" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0cae8d00-ab08-4200-9c61-e91fc1a60399" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0cae8d00-ab08-4200-9c61-e91fc1a60399" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_245a5108-2ae2-461a-8b9a-b37f3adff0c1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_245a5108-2ae2-461a-8b9a-b37f3adff0c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_f742406a-e147-41ea-a0c6-1ff9eb80e9c0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefinitelivedIntangibleAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:to="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_f742406a-e147-41ea-a0c6-1ff9eb80e9c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_IndefiniteLivedExcludingGoodwillAssetsHeldForSale_288d570f-bac2-4de6-9200-984e716c48c5" xlink:href="eri-20200930.xsd#eri_IndefiniteLivedExcludingGoodwillAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_5c42d870-029a-499b-b1c2-984d5bbdc8ca" xlink:to="loc_eri_IndefiniteLivedExcludingGoodwillAssetsHeldForSale_288d570f-bac2-4de6-9200-984e716c48c5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_8242f01b-6f5f-48f9-abe1-ac1975306bed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_fe82fc1a-3b42-4cb2-9430-165cde772838" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_6e5c1e6e-8732-44ed-9227-98d44afe5575" xlink:to="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_fe82fc1a-3b42-4cb2-9430-165cde772838" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_6a9c0df0-b040-4b5e-ac8b-a556ba814b12" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_fe82fc1a-3b42-4cb2-9430-165cde772838" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_6a9c0df0-b040-4b5e-ac8b-a556ba814b12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6a9c0df0-b040-4b5e-ac8b-a556ba814b12_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_6a9c0df0-b040-4b5e-ac8b-a556ba814b12" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6a9c0df0-b040-4b5e-ac8b-a556ba814b12_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fc2aab47-9859-4804-a692-19c471aece9c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_6a9c0df0-b040-4b5e-ac8b-a556ba814b12" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fc2aab47-9859-4804-a692-19c471aece9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_bc5f1837-6940-4f11-8c05-e0762517d476" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fc2aab47-9859-4804-a692-19c471aece9c" xlink:to="loc_us-gaap_LicensingAgreementsMember_bc5f1837-6940-4f11-8c05-e0762517d476" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofIntangibleAssetsOtherThanGoodwillDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetScheduleofIntangibleAssetsOtherThanGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofIntangibleAssetsOtherThanGoodwillDetails" xlink:type="extended" id="ic921bab98640471c9a3b7ebd93d1d76b_GoodwillandIntangibleAssetsnetScheduleofIntangibleAssetsOtherThanGoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7eef4e92-928e-444c-9495-ff17dca8ff7e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7eef4e92-928e-444c-9495-ff17dca8ff7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c56a3f31-4b2d-4045-8b8d-991f636a93f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c56a3f31-4b2d-4045-8b8d-991f636a93f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_0f6460b5-5abc-4549-83db-65d43008eff7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_0f6460b5-5abc-4549-83db-65d43008eff7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c0f81bcd-aade-4395-9032-554cb096bdc8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c0f81bcd-aade-4395-9032-554cb096bdc8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_4858634d-f783-4a48-9a73-0c7ecb0cca93" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_4858634d-f783-4a48-9a73-0c7ecb0cca93" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a764ebe7-2253-46db-a241-97eaba19098f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a764ebe7-2253-46db-a241-97eaba19098f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_73b88e41-0b0b-4c62-af66-d836bef8b686" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_954d961d-c710-4a99-b087-e47d4505f8b6" xlink:to="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_73b88e41-0b0b-4c62-af66-d836bef8b686" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d63b7290-77e8-46ca-b239-6f0fbd3ca801" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_73b88e41-0b0b-4c62-af66-d836bef8b686" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d63b7290-77e8-46ca-b239-6f0fbd3ca801" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d63b7290-77e8-46ca-b239-6f0fbd3ca801_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d63b7290-77e8-46ca-b239-6f0fbd3ca801" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d63b7290-77e8-46ca-b239-6f0fbd3ca801_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d92ecd88-8cde-4081-9d0f-d54e99ec6ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d63b7290-77e8-46ca-b239-6f0fbd3ca801" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d92ecd88-8cde-4081-9d0f-d54e99ec6ce0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_43430014-121b-471c-99af-a785633fedbf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelatedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d92ecd88-8cde-4081-9d0f-d54e99ec6ce0" xlink:to="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_43430014-121b-471c-99af-a785633fedbf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingRightsAndOthersMember_a32b8cf3-c626-4e09-922d-3f1810d0a0f0" xlink:href="eri-20200930.xsd#eri_GamingRightsAndOthersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d92ecd88-8cde-4081-9d0f-d54e99ec6ce0" xlink:to="loc_eri_GamingRightsAndOthersMember_a32b8cf3-c626-4e09-922d-3f1810d0a0f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_a0a5f901-657a-43e5-a3be-f06117029e31" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_73b88e41-0b0b-4c62-af66-d836bef8b686" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_a0a5f901-657a-43e5-a3be-f06117029e31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_a0a5f901-657a-43e5-a3be-f06117029e31_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_a0a5f901-657a-43e5-a3be-f06117029e31" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_a0a5f901-657a-43e5-a3be-f06117029e31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0ebbda36-6327-44bb-9129-ecdb2c176b98" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_a0a5f901-657a-43e5-a3be-f06117029e31" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0ebbda36-6327-44bb-9129-ecdb2c176b98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_IndefinitelivedTradeNamesMember_93bf2ff9-fb1e-4a22-ad2e-9e122c4be7bc" xlink:href="eri-20200930.xsd#eri_IndefinitelivedTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0ebbda36-6327-44bb-9129-ecdb2c176b98" xlink:to="loc_eri_IndefinitelivedTradeNamesMember_93bf2ff9-fb1e-4a22-ad2e-9e122c4be7bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_33bfd6dd-c854-4656-979d-368d0c2f9ee6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0ebbda36-6327-44bb-9129-ecdb2c176b98" xlink:to="loc_us-gaap_LicensingAgreementsMember_33bfd6dd-c854-4656-979d-368d0c2f9ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsRewardsProgramsMember_97b51c5c-a588-435b-b17e-16a8be02a97c" xlink:href="eri-20200930.xsd#eri_CaesarsRewardsProgramsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0ebbda36-6327-44bb-9129-ecdb2c176b98" xlink:to="loc_eri_CaesarsRewardsProgramsMember_97b51c5c-a588-435b-b17e-16a8be02a97c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_186dead3-e788-4469-9658-2d13a6cd4b05" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_73b88e41-0b0b-4c62-af66-d836bef8b686" xlink:to="loc_srt_RangeAxis_186dead3-e788-4469-9658-2d13a6cd4b05" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_186dead3-e788-4469-9658-2d13a6cd4b05_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_186dead3-e788-4469-9658-2d13a6cd4b05" xlink:to="loc_srt_RangeMember_186dead3-e788-4469-9658-2d13a6cd4b05_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7deae8e0-9a36-4543-9522-ad3b4685a0ca" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_186dead3-e788-4469-9658-2d13a6cd4b05" xlink:to="loc_srt_RangeMember_7deae8e0-9a36-4543-9522-ad3b4685a0ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b02a9830-b10e-4c1c-8e5a-762cde92a87b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7deae8e0-9a36-4543-9522-ad3b4685a0ca" xlink:to="loc_srt_MinimumMember_b02a9830-b10e-4c1c-8e5a-762cde92a87b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f0480674-88dc-49f0-8cd8-18b3c164866c" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7deae8e0-9a36-4543-9522-ad3b4685a0ca" xlink:to="loc_srt_MaximumMember_f0480674-88dc-49f0-8cd8-18b3c164866c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetAdditionalInformationDetails" xlink:type="extended" id="iefdf29a8fc4f442ea8a74bbee87b5615_GoodwillandIntangibleAssetsnetAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_6a458497-5ada-413c-a4d5-e02dde483077" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_6a458497-5ada-413c-a4d5-e02dde483077" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_cf42c43b-b4ea-4cf9-bd5d-b7e2c6a9eac8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_cf42c43b-b4ea-4cf9-bd5d-b7e2c6a9eac8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_52ddc950-a1b2-486c-a587-0c99cb127dae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_AssetImpairmentCharges_52ddc950-a1b2-486c-a587-0c99cb127dae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_54bdb93c-78a8-480d-a8b9-a5e5ea87e505" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_54bdb93c-78a8-480d-a8b9-a5e5ea87e505" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_acd93e34-f3e9-4984-95c4-33a5d58dff2b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_acd93e34-f3e9-4984-95c4-33a5d58dff2b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_05489f52-0f2c-4348-a88a-14793119bd08" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_05489f52-0f2c-4348-a88a-14793119bd08" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_c376dfd7-f5a1-46df-af7a-2738bc8af572" xlink:to="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fcb0488c-c5f8-49c6-b76b-1207f0d9e91c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_4d49890c-1da4-4d5b-9956-031e777076b7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:to="loc_us-gaap_TradeNamesMember_4d49890c-1da4-4d5b-9956-031e777076b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_38a35895-b9e5-460a-8bd7-9643e51c22c2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_38a35895-b9e5-460a-8bd7-9643e51c22c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RightOfUseAssetsMember_c368b641-6391-4b7c-b329-6abe42396e28" xlink:href="eri-20200930.xsd#eri_RightOfUseAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:to="loc_eri_RightOfUseAssetsMember_c368b641-6391-4b7c-b329-6abe42396e28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_cc7d3274-d289-4f3b-b315-7da76a9a9ae3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ceaa78a-6254-46b8-a110-ceb46c5a07b5" xlink:to="loc_us-gaap_LicensingAgreementsMember_cc7d3274-d289-4f3b-b315-7da76a9a9ae3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_ca615988-ef5c-4f1c-bd49-0d9fdb4d41f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_c45cd74d-f2f7-41c7-a7cb-1779b48a4e30" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_ca615988-ef5c-4f1c-bd49-0d9fdb4d41f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MontBleuCasinoResortSpaMember_598d3ec5-5803-454c-92fd-b6f512235228" xlink:href="eri-20200930.xsd#eri_MontBleuCasinoResortSpaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_ca615988-ef5c-4f1c-bd49-0d9fdb4d41f0" xlink:to="loc_eri_MontBleuCasinoResortSpaMember_598d3ec5-5803-454c-92fd-b6f512235228" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8714d36e-322b-4bd3-8394-2bf02b998ee4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_c7ffc8a2-c34c-42b9-b4cb-c4d3edded5aa" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8714d36e-322b-4bd3-8394-2bf02b998ee4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AssetHeldForSaleMember_ffa30956-711c-40e2-8394-2276bdb321ad" xlink:href="eri-20200930.xsd#eri_AssetHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8714d36e-322b-4bd3-8394-2bf02b998ee4" xlink:to="loc_eri_AssetHeldForSaleMember_ffa30956-711c-40e2-8394-2276bdb321ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_be803ee9-2fee-4a93-af83-abfcdf746108" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_be803ee9-2fee-4a93-af83-abfcdf746108" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_be803ee9-2fee-4a93-af83-abfcdf746108_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_be803ee9-2fee-4a93-af83-abfcdf746108" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_be803ee9-2fee-4a93-af83-abfcdf746108_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2cc14010-229a-41fd-85aa-506c7701e529" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_be803ee9-2fee-4a93-af83-abfcdf746108" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2cc14010-229a-41fd-85aa-506c7701e529" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_acbb1ad9-470f-4783-9f00-b7a23e81ec5e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelatedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2cc14010-229a-41fd-85aa-506c7701e529" xlink:to="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_acbb1ad9-470f-4783-9f00-b7a23e81ec5e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5f6a4abc-751a-4f6f-9d95-2862c48b407d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_e1035d99-f6e1-4e16-b63f-101036d25846" xlink:to="loc_us-gaap_DebtInstrumentAxis_5f6a4abc-751a-4f6f-9d95-2862c48b407d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5f6a4abc-751a-4f6f-9d95-2862c48b407d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5f6a4abc-751a-4f6f-9d95-2862c48b407d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5f6a4abc-751a-4f6f-9d95-2862c48b407d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_71fa783c-da15-47c3-83a5-8e3b022bbe92" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5f6a4abc-751a-4f6f-9d95-2862c48b407d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_71fa783c-da15-47c3-83a5-8e3b022bbe92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_b62bf9dd-623e-4a9b-9e0b-7f5136f4e519" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71fa783c-da15-47c3-83a5-8e3b022bbe92" xlink:to="loc_us-gaap_LicensingAgreementsMember_b62bf9dd-623e-4a9b-9e0b-7f5136f4e519" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsNewOrleansLeaseMember_f4c81208-5c88-4902-ae48-c4d0c60f24b8" xlink:href="eri-20200930.xsd#eri_HarrahsNewOrleansLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71fa783c-da15-47c3-83a5-8e3b022bbe92" xlink:to="loc_eri_HarrahsNewOrleansLeaseMember_f4c81208-5c88-4902-ae48-c4d0c60f24b8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofImpairmentChargesRecordedbySegmentDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetScheduleofImpairmentChargesRecordedbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofImpairmentChargesRecordedbySegmentDetails" xlink:type="extended" id="i6c2b501f4771494ab91e66d4a3fa0941_GoodwillandIntangibleAssetsnetScheduleofImpairmentChargesRecordedbySegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_0794c0f8-3daf-4084-aab7-ca022e7885a8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:to="loc_us-gaap_AssetImpairmentCharges_0794c0f8-3daf-4084-aab7-ca022e7885a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_7b27faa1-5ad8-4ff5-ade1-425d9466d7b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_7b27faa1-5ad8-4ff5-ade1-425d9466d7b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_bb84f218-c130-4b1b-8c9d-9b9540c42811" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_bb84f218-c130-4b1b-8c9d-9b9540c42811" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_08c6c30c-49f0-4eb7-8ca6-cff47853a4fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_08c6c30c-49f0-4eb7-8ca6-cff47853a4fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_7151e336-eb63-4dfd-9ea1-3d9c33552a13" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_ce02e22a-d3dd-45d5-8bfc-87ab55cec09f" xlink:to="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_7151e336-eb63-4dfd-9ea1-3d9c33552a13" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_83f24b4d-8652-412b-9d49-5b9fd58582ab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_7151e336-eb63-4dfd-9ea1-3d9c33552a13" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_83f24b4d-8652-412b-9d49-5b9fd58582ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_83f24b4d-8652-412b-9d49-5b9fd58582ab_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_83f24b4d-8652-412b-9d49-5b9fd58582ab" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_83f24b4d-8652-412b-9d49-5b9fd58582ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2cda825a-45a2-4174-bb84-a9a6d785f08c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_83f24b4d-8652-412b-9d49-5b9fd58582ab" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2cda825a-45a2-4174-bb84-a9a6d785f08c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MontBleuCasinoResortSpaMember_c165656a-52bf-426d-9ccd-60ed96c053ab" xlink:href="eri-20200930.xsd#eri_MontBleuCasinoResortSpaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2cda825a-45a2-4174-bb84-a9a6d785f08c" xlink:to="loc_eri_MontBleuCasinoResortSpaMember_c165656a-52bf-426d-9ccd-60ed96c053ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_009ad473-e297-43a5-a1f6-4a0588045bf6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_7151e336-eb63-4dfd-9ea1-3d9c33552a13" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_009ad473-e297-43a5-a1f6-4a0588045bf6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_009ad473-e297-43a5-a1f6-4a0588045bf6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_009ad473-e297-43a5-a1f6-4a0588045bf6" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_009ad473-e297-43a5-a1f6-4a0588045bf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_50acfa23-43d5-4249-a2cb-e3accc85210c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_009ad473-e297-43a5-a1f6-4a0588045bf6" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_50acfa23-43d5-4249-a2cb-e3accc85210c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AssetHeldForSaleMember_2b1d0dca-8f02-48eb-9030-7f55c8f2a74e" xlink:href="eri-20200930.xsd#eri_AssetHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_50acfa23-43d5-4249-a2cb-e3accc85210c" xlink:to="loc_eri_AssetHeldForSaleMember_2b1d0dca-8f02-48eb-9030-7f55c8f2a74e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_13d93820-072f-465c-b73f-2c2ed8b92478" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_7151e336-eb63-4dfd-9ea1-3d9c33552a13" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_13d93820-072f-465c-b73f-2c2ed8b92478" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_13d93820-072f-465c-b73f-2c2ed8b92478_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_13d93820-072f-465c-b73f-2c2ed8b92478" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_13d93820-072f-465c-b73f-2c2ed8b92478_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ac2cd1d-8778-4a12-8c57-e34652d27e87" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_13d93820-072f-465c-b73f-2c2ed8b92478" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ac2cd1d-8778-4a12-8c57-e34652d27e87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_cdec0cc2-e356-46f1-a174-4894fd3285f1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ac2cd1d-8778-4a12-8c57-e34652d27e87" xlink:to="loc_us-gaap_TradeNamesMember_cdec0cc2-e356-46f1-a174-4894fd3285f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_68c11e7d-b66c-4645-b597-e574c0e8ad57" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ac2cd1d-8778-4a12-8c57-e34652d27e87" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_68c11e7d-b66c-4645-b597-e574c0e8ad57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RightOfUseAssetsMember_d5447edf-8d34-4ca4-9e98-7811eec39c67" xlink:href="eri-20200930.xsd#eri_RightOfUseAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_4ac2cd1d-8778-4a12-8c57-e34652d27e87" xlink:to="loc_eri_RightOfUseAssetsMember_d5447edf-8d34-4ca4-9e98-7811eec39c67" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#GoodwillandIntangibleAssetsnetScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/GoodwillandIntangibleAssetsnetScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended" id="ia221ff81182d4627a3ac2de7aad786d2_GoodwillandIntangibleAssetsnetScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_64772e4a-ceb0-4998-a95b-722f249abe36" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_64772e4a-ceb0-4998-a95b-722f249abe36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedIntangibleAssetsAmortizationExpenseYearOne_6c76a3b1-6b87-49fa-9adb-ca724126dd82" xlink:href="eri-20200930.xsd#eri_FiniteLivedIntangibleAssetsAmortizationExpenseYearOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_eri_FiniteLivedIntangibleAssetsAmortizationExpenseYearOne_6c76a3b1-6b87-49fa-9adb-ca724126dd82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_f5289f08-fd6c-4e9e-8058-6c3b2385a1b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_f5289f08-fd6c-4e9e-8058-6c3b2385a1b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_53a39a5b-1100-4d04-9499-a9e8e1738f1d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_53a39a5b-1100-4d04-9499-a9e8e1738f1d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_f3f2e18f-f710-479b-bd1f-232e7067847e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_f3f2e18f-f710-479b-bd1f-232e7067847e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_341be754-41b2-4f44-8124-f42e7e6dce3a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_341be754-41b2-4f44-8124-f42e7e6dce3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_42a45378-db21-4a9e-8b89-dc0c3458b4dd" xlink:href="eri-20200930.xsd#eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems_2b79ce42-4395-42fe-8425-8698f0abb4ad" xlink:to="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_42a45378-db21-4a9e-8b89-dc0c3458b4dd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_29b2c067-2775-4341-bd9b-604fe4ea5029" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable_42a45378-db21-4a9e-8b89-dc0c3458b4dd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_29b2c067-2775-4341-bd9b-604fe4ea5029" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_29b2c067-2775-4341-bd9b-604fe4ea5029_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_29b2c067-2775-4341-bd9b-604fe4ea5029" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_29b2c067-2775-4341-bd9b-604fe4ea5029_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f556bc-7d1d-41cf-a4d5-dcaf3444c390" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_29b2c067-2775-4341-bd9b-604fe4ea5029" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f556bc-7d1d-41cf-a4d5-dcaf3444c390" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_84b18c36-9cfc-41e8-99a3-de18bb4e6e12" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelatedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f556bc-7d1d-41cf-a4d5-dcaf3444c390" xlink:to="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_84b18c36-9cfc-41e8-99a3-de18bb4e6e12" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/IncomeTaxes" xlink:type="simple" xlink:href="eri-20200930.xsd#IncomeTaxes"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/IncomeTaxes" xlink:type="extended" id="i4c0d14b227074e95aca44e4125286952_IncomeTaxes"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="eri-20200930.xsd#IncomeTaxesTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/IncomeTaxesTables" xlink:type="extended" id="i751fdf48a1e14eb59c335cda7a9d52fd_IncomeTaxesTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#IncomeTaxesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="extended" id="i46b16da15e814d6a84ae4d619fd01851_IncomeTaxesAdditionalInformationDetails"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/Leases" xlink:type="simple" xlink:href="eri-20200930.xsd#Leases"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/Leases" xlink:type="extended" id="i9208ba6740e346309cfb297a30c99116_Leases"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesTables" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesTables" xlink:type="extended" id="ica4c049c26d04eef99bf2c41ec451083_LeasesTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesAdditionalInformationDetails" xlink:type="extended" id="i1cddd27d2d2c4fe49d5c9a098f8ac923_LeasesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_14add524-6200-4072-be2f-86595b31c00a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeOperatingLeaseAndFinanceLeaseOfOptionToExtendLeaseTerm_dd1234f6-871e-40b5-ad86-3c7ac943e7c3" xlink:href="eri-20200930.xsd#eri_LesseeOperatingLeaseAndFinanceLeaseOfOptionToExtendLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_14add524-6200-4072-be2f-86595b31c00a" xlink:to="loc_eri_LesseeOperatingLeaseAndFinanceLeaseOfOptionToExtendLeaseTerm_dd1234f6-871e-40b5-ad86-3c7ac943e7c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_8dcf148a-4593-4c0c-a6cb-dfecbcc1db90" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_14add524-6200-4072-be2f-86595b31c00a" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_8dcf148a-4593-4c0c-a6cb-dfecbcc1db90" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_09c0f23d-ba51-41e2-8280-a51cc2c796c1" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_8dcf148a-4593-4c0c-a6cb-dfecbcc1db90" xlink:to="loc_srt_RangeAxis_09c0f23d-ba51-41e2-8280-a51cc2c796c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_09c0f23d-ba51-41e2-8280-a51cc2c796c1_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_09c0f23d-ba51-41e2-8280-a51cc2c796c1" xlink:to="loc_srt_RangeMember_09c0f23d-ba51-41e2-8280-a51cc2c796c1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_76899b4d-8484-4ae7-a9ee-d41129c362aa" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_09c0f23d-ba51-41e2-8280-a51cc2c796c1" xlink:to="loc_srt_RangeMember_76899b4d-8484-4ae7-a9ee-d41129c362aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_d1e8c586-5087-430a-aba4-d7b5c9d3ee53" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_76899b4d-8484-4ae7-a9ee-d41129c362aa" xlink:to="loc_srt_MinimumMember_d1e8c586-5087-430a-aba4-d7b5c9d3ee53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_b78ac635-5c5a-4c4d-8c3c-be04faf885a7" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_76899b4d-8484-4ae7-a9ee-d41129c362aa" xlink:to="loc_srt_MaximumMember_b78ac635-5c5a-4c4d-8c3c-be04faf885a7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesFinancingObligationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesFinancingObligationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesFinancingObligationDetails" xlink:type="extended" id="i55ab9c9794854089a36500f3cdf7f428_LeasesFinancingObligationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ContractualRentAmount_b2de6c2d-2bae-436e-a694-895cc0de072b" xlink:href="eri-20200930.xsd#eri_ContractualRentAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_ContractualRentAmount_b2de6c2d-2bae-436e-a694-895cc0de072b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseTermOfContract1_5915d09f-9d5d-4a32-96c0-7c143d7e90c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeFinanceLeaseTermOfContract1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_LesseeFinanceLeaseTermOfContract1_5915d09f-9d5d-4a32-96c0-7c143d7e90c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeFinanceLeaseNumberOfRenewalOptions_97875c6f-521c-4216-b54b-692f844eafa9" xlink:href="eri-20200930.xsd#eri_LesseeFinanceLeaseNumberOfRenewalOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LesseeFinanceLeaseNumberOfRenewalOptions_97875c6f-521c-4216-b54b-692f844eafa9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseRenewalTerm1_ae1666f9-1cfa-493b-a8b0-2888930b335e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeFinanceLeaseRenewalTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_LesseeFinanceLeaseRenewalTerm1_ae1666f9-1cfa-493b-a8b0-2888930b335e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities_1dad29df-f3ec-4153-bb79-bb6a710a79fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities_1dad29df-f3ec-4153-bb79-bb6a710a79fe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeAnnualBaseRent_0b0fffb3-9054-4b6c-b1d2-3de5c6969b2e" xlink:href="eri-20200930.xsd#eri_LesseeAnnualBaseRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LesseeAnnualBaseRent_0b0fffb3-9054-4b6c-b1d2-3de5c6969b2e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeAnnualUseFeeOfPropertyPlantAndEquipment_a7fe1e36-3603-41ce-a838-588c7b73146f" xlink:href="eri-20200930.xsd#eri_LesseeAnnualUseFeeOfPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LesseeAnnualUseFeeOfPropertyPlantAndEquipment_a7fe1e36-3603-41ce-a838-588c7b73146f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeLeasingArrangementsPercentageOfEBITDARToRentRatioFloor_edef49ab-0733-4460-9d42-9ab581d154ac" xlink:href="eri-20200930.xsd#eri_LesseeLeasingArrangementsPercentageOfEBITDARToRentRatioFloor"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LesseeLeasingArrangementsPercentageOfEBITDARToRentRatioFloor_edef49ab-0733-4460-9d42-9ab581d154ac" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_14d56b1d-ebb7-4159-a4e4-f485d8f1c3a4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_14d56b1d-ebb7-4159-a4e4-f485d8f1c3a4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ProceedsFromLeaseAmendments_1515b362-d5ad-4df7-8c57-ee1877a93713" xlink:href="eri-20200930.xsd#eri_ProceedsFromLeaseAmendments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_ProceedsFromLeaseAmendments_1515b362-d5ad-4df7-8c57-ee1877a93713" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AnnualRentPayable_a1ebf4ef-7a41-4cef-8282-fcf721f05d82" xlink:href="eri-20200930.xsd#eri_AnnualRentPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_AnnualRentPayable_a1ebf4ef-7a41-4cef-8282-fcf721f05d82" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FailedSaleLeasebackTransactionLeaseTerm_fa2e056a-aeac-45bc-87de-14388b7205be" xlink:href="eri-20200930.xsd#eri_FailedSaleLeasebackTransactionLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_FailedSaleLeasebackTransactionLeaseTerm_fa2e056a-aeac-45bc-87de-14388b7205be" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FailedSaleLeasebackTransactionImputedInterestRate_68469365-2764-49ef-af5a-78ba3efa5636" xlink:href="eri-20200930.xsd#eri_FailedSaleLeasebackTransactionImputedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_FailedSaleLeasebackTransactionImputedInterestRate_68469365-2764-49ef-af5a-78ba3efa5636" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_61a34a46-69b6-42ee-8b70-c5853b61ee71" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_61a34a46-69b6-42ee-8b70-c5853b61ee71" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LesseeOperatingLeaseNumberOfRenewalOptions_af68d62a-b51f-4c66-8087-afa013c813e1" xlink:href="eri-20200930.xsd#eri_LesseeOperatingLeaseNumberOfRenewalOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LesseeOperatingLeaseNumberOfRenewalOptions_af68d62a-b51f-4c66-8087-afa013c813e1" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LeaseAgreementNonEscalatingPortionBaseRent_1da4cc61-154d-4c22-83ce-a2ff047b7de0" xlink:href="eri-20200930.xsd#eri_LeaseAgreementNonEscalatingPortionBaseRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_eri_LeaseAgreementNonEscalatingPortionBaseRent_1da4cc61-154d-4c22-83ce-a2ff047b7de0" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_84d3f972-8056-4dce-b4f0-9bf6663164d3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_NotesPayable_84d3f972-8056-4dce-b4f0-9bf6663164d3" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_73170fac-4f59-4790-9edd-9f1ea5c29627" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_4af6b110-4102-43d9-8a50-d9f8013e2667" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_4af6b110-4102-43d9-8a50-d9f8013e2667" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_4af6b110-4102-43d9-8a50-d9f8013e2667_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_4af6b110-4102-43d9-8a50-d9f8013e2667" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_4af6b110-4102-43d9-8a50-d9f8013e2667_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_79b789cb-69aa-4f7f-b8ad-88056ef99bda" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_4af6b110-4102-43d9-8a50-d9f8013e2667" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_79b789cb-69aa-4f7f-b8ad-88056ef99bda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RealPropertyAssetsMember_3f2524a6-4d76-4f6d-bbaa-a8cf4ce04e59" xlink:href="eri-20200930.xsd#eri_RealPropertyAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_79b789cb-69aa-4f7f-b8ad-88056ef99bda" xlink:to="loc_eri_RealPropertyAssetsMember_3f2524a6-4d76-4f6d-bbaa-a8cf4ce04e59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GolfCourseMember_0da59241-c83f-42eb-823f-05912ec34df5" xlink:href="eri-20200930.xsd#eri_GolfCourseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_79b789cb-69aa-4f7f-b8ad-88056ef99bda" xlink:to="loc_eri_GolfCourseMember_0da59241-c83f-42eb-823f-05912ec34df5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_b342dfcd-8f60-401d-be6a-fc9de40bb342" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_us-gaap_LeaseArrangementTypeAxis_b342dfcd-8f60-401d-be6a-fc9de40bb342" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_b342dfcd-8f60-401d-be6a-fc9de40bb342_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_b342dfcd-8f60-401d-be6a-fc9de40bb342" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_b342dfcd-8f60-401d-be6a-fc9de40bb342_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_b342dfcd-8f60-401d-be6a-fc9de40bb342" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICILeaseMember_465a98f7-e5cd-4863-9213-38797aa580ba" xlink:href="eri-20200930.xsd#eri_VICILeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_VICILeaseMember_465a98f7-e5cd-4863-9213-38797aa580ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_JolietLeaseMember_70c37814-69e8-4b87-881c-427432b1d735" xlink:href="eri-20200930.xsd#eri_JolietLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_JolietLeaseMember_70c37814-69e8-4b87-881c-427432b1d735" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsLeaseAgreementsMember_116c6cc5-f687-4640-9b58-db418b6074b2" xlink:href="eri-20200930.xsd#eri_HarrahsLeaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_HarrahsLeaseAgreementsMember_116c6cc5-f687-4640-9b58-db418b6074b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NonCPLVLeaseMember_3710d321-2675-4ddb-9a2e-2636fe34e103" xlink:href="eri-20200930.xsd#eri_NonCPLVLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_NonCPLVLeaseMember_3710d321-2675-4ddb-9a2e-2636fe34e103" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIGolfCourseUseAgreementMember_44025b32-09db-48c9-a3a1-59923e65a6f7" xlink:href="eri-20200930.xsd#eri_VICIGolfCourseUseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_VICIGolfCourseUseAgreementMember_44025b32-09db-48c9-a3a1-59923e65a6f7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalLeaseAgreementMember_268e2d07-b6f2-4844-9d2b-200a64586320" xlink:href="eri-20200930.xsd#eri_RegionalLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_RegionalLeaseAgreementMember_268e2d07-b6f2-4844-9d2b-200a64586320" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CPLVLeaseMember_5aa6d2d6-2243-4a40-aebe-46c5616f78cd" xlink:href="eri-20200930.xsd#eri_CPLVLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_CPLVLeaseMember_5aa6d2d6-2243-4a40-aebe-46c5616f78cd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HLVLeaseMember_ed85ee3c-9871-4aab-bbd5-a79b4bde87f3" xlink:href="eri-20200930.xsd#eri_HLVLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fe3d0283-75b8-4624-8648-6301559db7ff" xlink:to="loc_eri_HLVLeaseMember_ed85ee3c-9871-4aab-bbd5-a79b4bde87f3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_a3f40f28-3b72-4938-a43f-f0c73959af6f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_us-gaap_TypeOfArrangementAxis_a3f40f28-3b72-4938-a43f-f0c73959af6f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_a3f40f28-3b72-4938-a43f-f0c73959af6f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_a3f40f28-3b72-4938-a43f-f0c73959af6f" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_a3f40f28-3b72-4938-a43f-f0c73959af6f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_6270f98a-b9bd-40a3-a7b8-d7ebb53fe9ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_a3f40f28-3b72-4938-a43f-f0c73959af6f" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_6270f98a-b9bd-40a3-a7b8-d7ebb53fe9ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MasterLeaseArrangementMember_7c14380f-d84f-4614-97fe-c519bb67527b" xlink:href="eri-20200930.xsd#eri_MasterLeaseArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_6270f98a-b9bd-40a3-a7b8-d7ebb53fe9ce" xlink:to="loc_eri_MasterLeaseArrangementMember_7c14380f-d84f-4614-97fe-c519bb67527b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f25e195d-77d9-47d9-a86d-a890eb3d161b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f25e195d-77d9-47d9-a86d-a890eb3d161b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f25e195d-77d9-47d9-a86d-a890eb3d161b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f25e195d-77d9-47d9-a86d-a890eb3d161b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f25e195d-77d9-47d9-a86d-a890eb3d161b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8d19c3f8-3520-43c9-a980-ec0f132574d6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f25e195d-77d9-47d9-a86d-a890eb3d161b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8d19c3f8-3520-43c9-a980-ec0f132574d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingAndLeisurePropertiesMember_90459a6b-81e2-4623-8a81-33a3c8fea348" xlink:href="eri-20200930.xsd#eri_GamingAndLeisurePropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8d19c3f8-3520-43c9-a980-ec0f132574d6" xlink:to="loc_eri_GamingAndLeisurePropertiesMember_90459a6b-81e2-4623-8a81-33a3c8fea348" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_d0979659-ca44-4480-aa84-e0d941fe2333" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_srt_RangeAxis_d0979659-ca44-4480-aa84-e0d941fe2333" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d0979659-ca44-4480-aa84-e0d941fe2333_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_d0979659-ca44-4480-aa84-e0d941fe2333" xlink:to="loc_srt_RangeMember_d0979659-ca44-4480-aa84-e0d941fe2333_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_712f2096-183c-4f90-96b8-9708e0976d0b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_d0979659-ca44-4480-aa84-e0d941fe2333" xlink:to="loc_srt_RangeMember_712f2096-183c-4f90-96b8-9708e0976d0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_c2f6e509-e168-4f9a-af77-90f7163740c0" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_712f2096-183c-4f90-96b8-9708e0976d0b" xlink:to="loc_srt_MinimumMember_c2f6e509-e168-4f9a-af77-90f7163740c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c7cd1939-500a-4a98-9ac7-940552aeddb3" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_712f2096-183c-4f90-96b8-9708e0976d0b" xlink:to="loc_srt_MaximumMember_c7cd1939-500a-4a98-9ac7-940552aeddb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_f8cf153b-4ac2-43ca-9942-7583bc20d8e4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_80715664-b39d-4fe6-b1be-9c1b5cfce394" xlink:to="loc_us-gaap_DebtInstrumentAxis_f8cf153b-4ac2-43ca-9942-7583bc20d8e4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f8cf153b-4ac2-43ca-9942-7583bc20d8e4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_f8cf153b-4ac2-43ca-9942-7583bc20d8e4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f8cf153b-4ac2-43ca-9942-7583bc20d8e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_04c530c4-9d16-46e9-b527-6d992960d0ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_f8cf153b-4ac2-43ca-9942-7583bc20d8e4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_04c530c4-9d16-46e9-b527-6d992960d0ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LumiereLoanMember_aa199b56-58f0-4630-8396-90923fa8afec" xlink:href="eri-20200930.xsd#eri_LumiereLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_04c530c4-9d16-46e9-b527-6d992960d0ba" xlink:to="loc_eri_LumiereLoanMember_aa199b56-58f0-4630-8396-90923fa8afec" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesScheduleofFutureMinimumLeasePaymentsforFinancingObligationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesScheduleofFutureMinimumLeasePaymentsforFinancingObligationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesScheduleofFutureMinimumLeasePaymentsforFinancingObligationDetails" xlink:type="extended" id="i708659814e4c4bf9937ec50aaf3b209e_LeasesScheduleofFutureMinimumLeasePaymentsforFinancingObligationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsRemainderOfFiscalYear_46869020-0316-48f7-8363-8de901dccb5d" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsRemainderOfFiscalYear_46869020-0316-48f7-8363-8de901dccb5d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoYears_c3a9d46f-8155-4fd5-951f-401509a7f86f" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoYears_c3a9d46f-8155-4fd5-951f-401509a7f86f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinThreeYears_bc7aab35-1a0c-47ad-abe4-93a1977d584a" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinThreeYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinThreeYears_bc7aab35-1a0c-47ad-abe4-93a1977d584a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourYears_48a5c603-68d9-4a2a-b47b-c49c25456415" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourYears_48a5c603-68d9-4a2a-b47b-c49c25456415" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFiveYears_7e6a6d07-1fef-4285-bb88-7cd108a9ff56" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFiveYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFiveYears_7e6a6d07-1fef-4285-bb88-7cd108a9ff56" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter_69248c8f-c6be-4072-bf4f-514fe0357c30" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter_69248c8f-c6be-4072-bf4f-514fe0357c30" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactions_0ab7998d-0d7c-416c-8d90-2279a6bc17db" xlink:href="eri-20200930.xsd#eri_MinimumLeasePaymentsFailedSaleLeasebackTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_MinimumLeasePaymentsFailedSaleLeasebackTransactions_0ab7998d-0d7c-416c-8d90-2279a6bc17db" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestPortionOfMinimumLeasePaymentsFailedSaleLeasebackTransactions_0aace8a2-9f6e-4ea6-adfc-f5bf961e91b4" xlink:href="eri-20200930.xsd#eri_InterestPortionOfMinimumLeasePaymentsFailedSaleLeasebackTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_InterestPortionOfMinimumLeasePaymentsFailedSaleLeasebackTransactions_0aace8a2-9f6e-4ea6-adfc-f5bf961e91b4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FailedSaleLeaseBackTransactionResidualValues_ac74e387-69cc-43a2-9cb1-cc236b5548a0" xlink:href="eri-20200930.xsd#eri_FailedSaleLeaseBackTransactionResidualValues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_FailedSaleLeaseBackTransactionResidualValues_ac74e387-69cc-43a2-9cb1-cc236b5548a0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FinancingObligation_72e8e59e-b0f9-49a9-ab99-152d1d1e52a0" xlink:href="eri-20200930.xsd#eri_FinancingObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_eri_FinancingObligation_72e8e59e-b0f9-49a9-ab99-152d1d1e52a0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_55ea2ba2-026c-4d59-bdbd-d3aca2eae4d4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_a48b830e-8ea5-4abd-960c-3004fe1a3258" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_55ea2ba2-026c-4d59-bdbd-d3aca2eae4d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_4bb26baf-b4f8-4de1-999c-22cf11bed9f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_55ea2ba2-026c-4d59-bdbd-d3aca2eae4d4" xlink:to="loc_us-gaap_LeaseArrangementTypeAxis_4bb26baf-b4f8-4de1-999c-22cf11bed9f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_4bb26baf-b4f8-4de1-999c-22cf11bed9f4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_4bb26baf-b4f8-4de1-999c-22cf11bed9f4" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_4bb26baf-b4f8-4de1-999c-22cf11bed9f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_fd755f0a-ab6a-4bba-886c-f0598e961368" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_4bb26baf-b4f8-4de1-999c-22cf11bed9f4" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_fd755f0a-ab6a-4bba-886c-f0598e961368" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GLPILeasesMember_42c4e8e1-f63a-4057-848f-08da1e0e1455" xlink:href="eri-20200930.xsd#eri_GLPILeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fd755f0a-ab6a-4bba-886c-f0598e961368" xlink:to="loc_eri_GLPILeasesMember_42c4e8e1-f63a-4057-848f-08da1e0e1455" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICILeasesMember_671fe5e6-ad39-4e99-af8f-8c300eaee915" xlink:href="eri-20200930.xsd#eri_VICILeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_fd755f0a-ab6a-4bba-886c-f0598e961368" xlink:to="loc_eri_VICILeasesMember_671fe5e6-ad39-4e99-af8f-8c300eaee915" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesScheduleofCashPaidforFinancingObligationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesScheduleofCashPaidforFinancingObligationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesScheduleofCashPaidforFinancingObligationDetails" xlink:type="extended" id="i0437839051514d72ad4c2ed935ed15c3_LeasesScheduleofCashPaidforFinancingObligationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_86e6f239-e9c9-4e28-8bd5-7c9f5dcff452" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FinancingObligationPrincipalPayments_86e51d01-4737-47db-9925-9a3329785014" xlink:href="eri-20200930.xsd#eri_FinancingObligationPrincipalPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_86e6f239-e9c9-4e28-8bd5-7c9f5dcff452" xlink:to="loc_eri_FinancingObligationPrincipalPayments_86e51d01-4737-47db-9925-9a3329785014" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FinancingObligationInterestPayments_957bc727-39f6-4e52-970e-5bb54ad36277" xlink:href="eri-20200930.xsd#eri_FinancingObligationInterestPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_86e6f239-e9c9-4e28-8bd5-7c9f5dcff452" xlink:to="loc_eri_FinancingObligationInterestPayments_957bc727-39f6-4e52-970e-5bb54ad36277" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_dc3ad0d9-154d-4c9a-afad-b6992a93de8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_86e6f239-e9c9-4e28-8bd5-7c9f5dcff452" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_dc3ad0d9-154d-4c9a-afad-b6992a93de8a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_7b45f210-d664-442b-861e-d4fcabc39977" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_dc3ad0d9-154d-4c9a-afad-b6992a93de8a" xlink:to="loc_us-gaap_LeaseArrangementTypeAxis_7b45f210-d664-442b-861e-d4fcabc39977" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_7b45f210-d664-442b-861e-d4fcabc39977_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_7b45f210-d664-442b-861e-d4fcabc39977" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_7b45f210-d664-442b-861e-d4fcabc39977_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_0cfd8d3c-58a0-455f-a950-c6132fd98f2d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_7b45f210-d664-442b-861e-d4fcabc39977" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_0cfd8d3c-58a0-455f-a950-c6132fd98f2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GLPILeasesMember_2ac8a5e7-69d8-49fb-9615-2972e4088fad" xlink:href="eri-20200930.xsd#eri_GLPILeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_0cfd8d3c-58a0-455f-a950-c6132fd98f2d" xlink:to="loc_eri_GLPILeasesMember_2ac8a5e7-69d8-49fb-9615-2972e4088fad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICILeasesMember_cb2c6d2b-1ae0-4a6c-a2fe-4ab9309836a4" xlink:href="eri-20200930.xsd#eri_VICILeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_0cfd8d3c-58a0-455f-a950-c6132fd98f2d" xlink:to="loc_eri_VICILeasesMember_cb2c6d2b-1ae0-4a6c-a2fe-4ab9309836a4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LeasesLessorArrangementsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LeasesLessorArrangementsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LeasesLessorArrangementsDetails" xlink:type="extended" id="i987caa9552e842b2b952097b6ef67598_LeasesLessorArrangementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionLineItems_ec10859f-3a4e-4844-be77-d180dc5f341d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_51dc5081-4d2d-45b8-9a7b-be9732a22258" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_ec10859f-3a4e-4844-be77-d180dc5f341d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_51dc5081-4d2d-45b8-9a7b-be9732a22258" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionTable_f13f3b0a-2e49-47d6-b514-56614f19e288" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_ec10859f-3a4e-4844-be77-d180dc5f341d" xlink:to="loc_us-gaap_LessorLeaseDescriptionTable_f13f3b0a-2e49-47d6-b514-56614f19e288" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_73bd77a8-214b-4427-91b9-fcdc4ac0f194" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_f13f3b0a-2e49-47d6-b514-56614f19e288" xlink:to="loc_srt_ProductOrServiceAxis_73bd77a8-214b-4427-91b9-fcdc4ac0f194" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_73bd77a8-214b-4427-91b9-fcdc4ac0f194_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_73bd77a8-214b-4427-91b9-fcdc4ac0f194" xlink:to="loc_srt_ProductsAndServicesDomain_73bd77a8-214b-4427-91b9-fcdc4ac0f194_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_1ee7870d-9dda-4d1f-bb1a-aa4c6598c76b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_73bd77a8-214b-4427-91b9-fcdc4ac0f194" xlink:to="loc_srt_ProductsAndServicesDomain_1ee7870d-9dda-4d1f-bb1a-aa4c6598c76b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HotelOwnedMember_fe12a393-c240-49f7-b867-21ca12d62dde" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HotelOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_1ee7870d-9dda-4d1f-bb1a-aa4c6598c76b" xlink:to="loc_us-gaap_HotelOwnedMember_fe12a393-c240-49f7-b867-21ca12d62dde" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_3f4d87e4-a280-4f11-af42-0cb87711918a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_1ee7870d-9dda-4d1f-bb1a-aa4c6598c76b" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_3f4d87e4-a280-4f11-af42-0cb87711918a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_dc51e0ce-ad47-42b7-b3eb-500d50d28db2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_f13f3b0a-2e49-47d6-b514-56614f19e288" xlink:to="loc_us-gaap_LeaseArrangementTypeAxis_dc51e0ce-ad47-42b7-b3eb-500d50d28db2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_dc51e0ce-ad47-42b7-b3eb-500d50d28db2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_dc51e0ce-ad47-42b7-b3eb-500d50d28db2" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_dc51e0ce-ad47-42b7-b3eb-500d50d28db2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_25e0916e-5d0f-4edc-80e4-943c07ac77f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_dc51e0ce-ad47-42b7-b3eb-500d50d28db2" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_25e0916e-5d0f-4edc-80e4-943c07ac77f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ConventionArrangementsMember_1461107d-5190-420c-85b9-9ce351a669b2" xlink:href="eri-20200930.xsd#eri_ConventionArrangementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_25e0916e-5d0f-4edc-80e4-943c07ac77f3" xlink:to="loc_eri_ConventionArrangementsMember_1461107d-5190-420c-85b9-9ce351a669b2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebt" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebt"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebt" xlink:type="extended" id="i3b3521645e064c089e30804f3a375936_LongTermDebt"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtTables" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtTables" xlink:type="extended" id="i8632adc6f4bd4c0383fde11739ca26d4_LongTermDebtTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtSummaryofLongtermDebtDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtSummaryofLongtermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtSummaryofLongtermDebtDetails" xlink:type="extended" id="iab40ab0c46e64557b76c445def27e687_LongTermDebtSummaryofLongtermDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_5335725b-9ef1-478c-9e26-748cb1447ce4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_5335725b-9ef1-478c-9e26-748cb1447ce4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_ed55b9bd-ad9d-47e0-b3d3-cec9f3dca825" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_LineOfCredit_ed55b9bd-ad9d-47e0-b3d3-cec9f3dca825" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_58022213-50c3-4737-b69b-dd281b97142e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_NotesPayable_58022213-50c3-4737-b69b-dd281b97142e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SpecialAssessmentBond_54baec1a-9188-4e79-94fb-11124bcb9822" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SpecialAssessmentBond"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_SpecialAssessmentBond_54baec1a-9188-4e79-94fb-11124bcb9822" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermNotesPayable_277690ba-b727-466f-8839-e20c4a969480" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_LongTermNotesPayable_277690ba-b727-466f-8839-e20c4a969480" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_781ea1e0-9aae-482b-88bb-e47f8388b14c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_LongTermDebt_781ea1e0-9aae-482b-88bb-e47f8388b14c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_1febc430-7210-43c4-b275-43aab33b743c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_LongTermDebtCurrent_1febc430-7210-43c4-b275-43aab33b743c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_34969634-6655-4335-b0bd-248c3c23abd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_34969634-6655-4335-b0bd-248c3c23abd7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_279cc1bf-eea9-462b-9204-d9906b0676fd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_279cc1bf-eea9-462b-9204-d9906b0676fd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_08ebe605-cdd5-4584-a483-2f030b711dcd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_08ebe605-cdd5-4584-a483-2f030b711dcd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_979bef7b-8989-4019-bbbb-f97153175d2d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_979bef7b-8989-4019-bbbb-f97153175d2d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_8db99e61-24fd-43ef-b8f2-cf6b925fc5ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_8db99e61-24fd-43ef-b8f2-cf6b925fc5ff" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsNet_7233f7a3-fd25-48bc-9f38-0862a43055a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsNet_7233f7a3-fd25-48bc-9f38-0862a43055a5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_424f8b83-dfce-4cc4-82af-2e7995e47976" xlink:to="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a33e20d4-0a7a-4381-9530-dead1f3ca05e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:to="loc_us-gaap_DebtInstrumentAxis_a33e20d4-0a7a-4381-9530-dead1f3ca05e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a33e20d4-0a7a-4381-9530-dead1f3ca05e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a33e20d4-0a7a-4381-9530-dead1f3ca05e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a33e20d4-0a7a-4381-9530-dead1f3ca05e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a33e20d4-0a7a-4381-9530-dead1f3ca05e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorSecuredNotesMember_c7f2857f-cf64-4746-af9f-b3d6b6d98a87" xlink:href="eri-20200930.xsd#eri_CEISeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CEISeniorSecuredNotesMember_c7f2857f-cf64-4746-af9f-b3d6b6d98a87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEIRevolvingCreditFacilityMember_a10a8a88-1954-4e41-be95-486c18eeefc6" xlink:href="eri-20200930.xsd#eri_CEIRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CEIRevolvingCreditFacilityMember_a10a8a88-1954-4e41-be95-486c18eeefc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEITermLoanMember_64913587-7bcd-4e3a-8af9-589d95521b59" xlink:href="eri-20200930.xsd#eri_CEITermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CEITermLoanMember_64913587-7bcd-4e3a-8af9-589d95521b59" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCTermLoanBMember_1efdbe8f-1e6d-4ffc-8129-82357c976243" xlink:href="eri-20200930.xsd#eri_CRCTermLoanBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CRCTermLoanBMember_1efdbe8f-1e6d-4ffc-8129-82357c976243" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCTermLoanB1Member_8969917f-957c-469f-b013-535e82b3221e" xlink:href="eri-20200930.xsd#eri_CRCTermLoanB1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CRCTermLoanB1Member_8969917f-957c-469f-b013-535e82b3221e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCRevolvingCreditFacilityMember_3321c7a0-5cb0-4697-bf68-3201443bfce8" xlink:href="eri-20200930.xsd#eri_CRCRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CRCRevolvingCreditFacilityMember_3321c7a0-5cb0-4697-bf68-3201443bfce8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCSeniorSecuredNotesMember_c1350bc3-528a-4a48-be4e-c554da18ab82" xlink:href="eri-20200930.xsd#eri_CRCSeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CRCSeniorSecuredNotesMember_c1350bc3-528a-4a48-be4e-c554da18ab82" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ConventionCenterMortgageLoanMember_4ebee622-3676-4783-867d-597bcf34fa06" xlink:href="eri-20200930.xsd#eri_ConventionCenterMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_ConventionCenterMortgageLoanMember_4ebee622-3676-4783-867d-597bcf34fa06" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LumiereLoanMember_c64f4306-ec81-4c11-bc52-3dfd166a27a8" xlink:href="eri-20200930.xsd#eri_LumiereLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_LumiereLoanMember_c64f4306-ec81-4c11-bc52-3dfd166a27a8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorNotesDue2027Member_6e5f167e-4559-4d52-9a47-18742f017218" xlink:href="eri-20200930.xsd#eri_CEISeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CEISeniorNotesDue2027Member_6e5f167e-4559-4d52-9a47-18742f017218" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCNotesMember_38639a9c-7ba5-420e-9b84-4ee03083d6be" xlink:href="eri-20200930.xsd#eri_CRCNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_CRCNotesMember_38639a9c-7ba5-420e-9b84-4ee03083d6be" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A5ConvertibleNotesMember_3ffa15af-c05b-4a2d-9443-f5f0b8b44807" xlink:href="eri-20200930.xsd#eri_A5ConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_A5ConvertibleNotesMember_3ffa15af-c05b-4a2d-9443-f5f0b8b44807" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredNotes6Due2026Member_280d2fcc-2a85-4026-99ba-5c52befbe639" xlink:href="eri-20200930.xsd#eri_SeniorSecuredNotes6Due2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_SeniorSecuredNotes6Due2026Member_280d2fcc-2a85-4026-99ba-5c52befbe639" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredNotes6Due2025Member_0271d454-a9cf-424b-aeab-1df6494c8159" xlink:href="eri-20200930.xsd#eri_SeniorSecuredNotes6Due2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_SeniorSecuredNotes6Due2025Member_0271d454-a9cf-424b-aeab-1df6494c8159" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredNotes7Due2023Member_fd1341f7-707b-4bb4-ac0d-106c6253fb8d" xlink:href="eri-20200930.xsd#eri_SeniorSecuredNotes7Due2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_SeniorSecuredNotes7Due2023Member_fd1341f7-707b-4bb4-ac0d-106c6253fb8d" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A1MonthCRCTermLoanB1Member_80318da5-dc83-457e-b44f-0e205168ab1b" xlink:href="eri-20200930.xsd#eri_A1MonthCRCTermLoanB1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_A1MonthCRCTermLoanB1Member_80318da5-dc83-457e-b44f-0e205168ab1b" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A3MonthCRCTermLoanB1Member_5da13d92-d642-42fb-8ed5-407134d8de02" xlink:href="eri-20200930.xsd#eri_A3MonthCRCTermLoanB1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d145dd55-8e86-45df-90cf-53c2f4353453" xlink:to="loc_eri_A3MonthCRCTermLoanB1Member_5da13d92-d642-42fb-8ed5-407134d8de02" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_52f918a8-40c9-43ca-97f2-eb7c9009aab5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_52f918a8-40c9-43ca-97f2-eb7c9009aab5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_52f918a8-40c9-43ca-97f2-eb7c9009aab5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_52f918a8-40c9-43ca-97f2-eb7c9009aab5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_52f918a8-40c9-43ca-97f2-eb7c9009aab5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_1f7e4583-0cc9-4c9b-a9e8-48b8e25d8139" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_52f918a8-40c9-43ca-97f2-eb7c9009aab5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_1f7e4583-0cc9-4c9b-a9e8-48b8e25d8139" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_96bd9cd3-8e9e-4362-8c2f-f127c7cbcce9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_1f7e4583-0cc9-4c9b-a9e8-48b8e25d8139" xlink:to="loc_us-gaap_SeniorNotesMember_96bd9cd3-8e9e-4362-8c2f-f127c7cbcce9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_a922e21c-acf4-44bb-b7e5-31bf563b8a39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:to="loc_us-gaap_VariableRateAxis_a922e21c-acf4-44bb-b7e5-31bf563b8a39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_a922e21c-acf4-44bb-b7e5-31bf563b8a39_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_a922e21c-acf4-44bb-b7e5-31bf563b8a39" xlink:to="loc_us-gaap_VariableRateDomain_a922e21c-acf4-44bb-b7e5-31bf563b8a39_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_729b1829-88b8-42ad-959c-3049552646bf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_a922e21c-acf4-44bb-b7e5-31bf563b8a39" xlink:to="loc_us-gaap_VariableRateDomain_729b1829-88b8-42ad-959c-3049552646bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_ccd774bf-2b64-4bd0-8632-0c338dc5f408" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_729b1829-88b8-42ad-959c-3049552646bf" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_ccd774bf-2b64-4bd0-8632-0c338dc5f408" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e919989b-140e-4f2b-9cd7-9638465842b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_729b1829-88b8-42ad-959c-3049552646bf" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e919989b-140e-4f2b-9cd7-9638465842b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_fa1dc222-7a63-4fbf-9758-73e98598d091" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:to="loc_us-gaap_CreditFacilityAxis_fa1dc222-7a63-4fbf-9758-73e98598d091" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_fa1dc222-7a63-4fbf-9758-73e98598d091_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_fa1dc222-7a63-4fbf-9758-73e98598d091" xlink:to="loc_us-gaap_CreditFacilityDomain_fa1dc222-7a63-4fbf-9758-73e98598d091_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_ef3cd8d8-f1d0-4210-82df-e76575b6bbaa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_fa1dc222-7a63-4fbf-9758-73e98598d091" xlink:to="loc_us-gaap_CreditFacilityDomain_ef3cd8d8-f1d0-4210-82df-e76575b6bbaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_e4b82f6d-94b2-4894-9c09-3de92ac18d63" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_ef3cd8d8-f1d0-4210-82df-e76575b6bbaa" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_e4b82f6d-94b2-4894-9c09-3de92ac18d63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_8162a84c-e325-4464-9454-bf5d5229572a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e8b4518b-d5c1-48e6-b217-807b050dbc5d" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_8162a84c-e325-4464-9454-bf5d5229572a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_8162a84c-e325-4464-9454-bf5d5229572a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_8162a84c-e325-4464-9454-bf5d5229572a" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_8162a84c-e325-4464-9454-bf5d5229572a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_9fa9f55f-9beb-4665-b01c-a54dfa7b0027" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_8162a84c-e325-4464-9454-bf5d5229572a" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_9fa9f55f-9beb-4665-b01c-a54dfa7b0027" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01fc4fc0-6fc3-47e2-9666-fdec1cc3bbc8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_9fa9f55f-9beb-4665-b01c-a54dfa7b0027" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01fc4fc0-6fc3-47e2-9666-fdec1cc3bbc8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_5a01b126-3398-4058-aeb3-bbb90efbe40e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01fc4fc0-6fc3-47e2-9666-fdec1cc3bbc8" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_5a01b126-3398-4058-aeb3-bbb90efbe40e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_98652c14-cf8a-4390-96e4-1ca6615d4b51" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01fc4fc0-6fc3-47e2-9666-fdec1cc3bbc8" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_98652c14-cf8a-4390-96e4-1ca6615d4b51" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtNewDebtTransactionsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtNewDebtTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtNewDebtTransactionsDetails" xlink:type="extended" id="idcea02eb423b4489ac52c9a95d79d4b9_LongTermDebtNewDebtTransactionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_f1dc2ccd-8d2a-45a2-a3b2-383807ceaf98" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_f1dc2ccd-8d2a-45a2-a3b2-383807ceaf98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_0720cf85-8a30-4db3-bfda-ebc2a7e44b90" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_0720cf85-8a30-4db3-bfda-ebc2a7e44b90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0d033651-7a1a-49f7-9156-7c26427a59b0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0d033651-7a1a-49f7-9156-7c26427a59b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_358ecdcf-7b10-4353-9a03-bf09b49a2eea" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentTerm_358ecdcf-7b10-4353-9a03-bf09b49a2eea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_3b9198c0-043d-4706-b059-224403e489e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_3b9198c0-043d-4706-b059-224403e489e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_6d0686cc-019f-4b48-95f3-aff027e9ca33" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_6d0686cc-019f-4b48-95f3-aff027e9ca33" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_06b31838-d076-4914-97e3-a8a617913f81" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_06b31838-d076-4914-97e3-a8a617913f81" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_f532c073-e2a6-482c-b86a-0f9fdd90c04f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_f532c073-e2a6-482c-b86a-0f9fdd90c04f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8bb443b1-2c55-4c63-8dc4-c63f022979cd" xlink:to="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_05b926e1-50fc-4b51-86f3-62e835f2b046" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_CreditFacilityAxis_05b926e1-50fc-4b51-86f3-62e835f2b046" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_05b926e1-50fc-4b51-86f3-62e835f2b046_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_05b926e1-50fc-4b51-86f3-62e835f2b046" xlink:to="loc_us-gaap_CreditFacilityDomain_05b926e1-50fc-4b51-86f3-62e835f2b046_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_05b926e1-50fc-4b51-86f3-62e835f2b046" xlink:to="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_TermLoanUnderSecuredCreditFacilityMember_cbacb9fb-1bf6-4b4f-9abb-9ec28c62ca99" xlink:href="eri-20200930.xsd#eri_TermLoanUnderSecuredCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:to="loc_eri_TermLoanUnderSecuredCreditFacilityMember_cbacb9fb-1bf6-4b4f-9abb-9ec28c62ca99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember_47708e8e-f5a0-4536-9f0e-aa73103d0762" xlink:href="eri-20200930.xsd#eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:to="loc_eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember_47708e8e-f5a0-4536-9f0e-aa73103d0762" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_fe53c0a9-c355-441b-84cf-f7efc331509f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_fe53c0a9-c355-441b-84cf-f7efc331509f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEIRevolvingCreditFacilityMember_100fde74-190a-443b-b663-2868eba3579c" xlink:href="eri-20200930.xsd#eri_CEIRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:to="loc_eri_CEIRevolvingCreditFacilityMember_100fde74-190a-443b-b663-2868eba3579c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCTermLoanMember_da663e4c-6a1e-4e00-ba68-eec815774944" xlink:href="eri-20200930.xsd#eri_CRCTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6cd769d7-9a2d-4c81-abfe-57827078a4a0" xlink:to="loc_eri_CRCTermLoanMember_da663e4c-6a1e-4e00-ba68-eec815774944" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_DebtInstrumentAxis_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ba55fc-87ec-4e33-9a63-bbb34ece4a9c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorSecuredNotesMember_16c8adb4-1b16-4e9a-ac68-69ec7cff6c8c" xlink:href="eri-20200930.xsd#eri_CEISeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_CEISeniorSecuredNotesMember_16c8adb4-1b16-4e9a-ac68-69ec7cff6c8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorNotesDue2027Member_9eaf8a4c-bd6e-4009-87cc-7a14866d0f7b" xlink:href="eri-20200930.xsd#eri_CEISeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_CEISeniorNotesDue2027Member_9eaf8a4c-bd6e-4009-87cc-7a14866d0f7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCSeniorSecuredNotesMember_5db52eff-a1b1-4ea2-87f6-f5578b526976" xlink:href="eri-20200930.xsd#eri_CRCSeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_CRCSeniorSecuredNotesMember_5db52eff-a1b1-4ea2-87f6-f5578b526976" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorNotes6Due2025Member_e400e155-9f6c-4246-9ab4-24f241269996" xlink:href="eri-20200930.xsd#eri_SeniorNotes6Due2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_SeniorNotes6Due2025Member_e400e155-9f6c-4246-9ab4-24f241269996" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorNotes6Due2026Member_1dc3e4df-44a8-4d27-bd15-66dcf990c838" xlink:href="eri-20200930.xsd#eri_SeniorNotes6Due2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_SeniorNotes6Due2026Member_1dc3e4df-44a8-4d27-bd15-66dcf990c838" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorNotes7Due2023Member_5f8110af-9fb7-44e0-b44a-26ffb5e20437" xlink:href="eri-20200930.xsd#eri_SeniorNotes7Due2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_SeniorNotes7Due2023Member_5f8110af-9fb7-44e0-b44a-26ffb5e20437" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredNotes6Due2025Member_68c10c96-f8d7-4dca-95cf-a71c941c89cf" xlink:href="eri-20200930.xsd#eri_SeniorSecuredNotes6Due2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_SeniorSecuredNotes6Due2025Member_68c10c96-f8d7-4dca-95cf-a71c941c89cf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SeniorSecuredNotes7Due2023Member_2d57efc4-ae05-4323-bad9-758f16444f1d" xlink:href="eri-20200930.xsd#eri_SeniorSecuredNotes7Due2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_SeniorSecuredNotes7Due2023Member_2d57efc4-ae05-4323-bad9-758f16444f1d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ConventionCenterMortgageLoanMember_77a37164-0f43-45e5-92fb-91148d92f9b2" xlink:href="eri-20200930.xsd#eri_ConventionCenterMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5f611579-c197-42f3-a0fc-413f2d8136d9" xlink:to="loc_eri_ConventionCenterMortgageLoanMember_77a37164-0f43-45e5-92fb-91148d92f9b2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_37423009-3531-40bc-87dc-c4007678dd8d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_37423009-3531-40bc-87dc-c4007678dd8d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_37423009-3531-40bc-87dc-c4007678dd8d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_37423009-3531-40bc-87dc-c4007678dd8d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_37423009-3531-40bc-87dc-c4007678dd8d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bcc0221a-64e2-4748-ba54-a9cebb497cb0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_37423009-3531-40bc-87dc-c4007678dd8d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bcc0221a-64e2-4748-ba54-a9cebb497cb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_48db4f15-fb10-4bed-b952-64871165ce9f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_bcc0221a-64e2-4748-ba54-a9cebb497cb0" xlink:to="loc_us-gaap_SeniorNotesMember_48db4f15-fb10-4bed-b952-64871165ce9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_2c4fcfa7-c417-4322-9463-2016941d0cbe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_bcc0221a-64e2-4748-ba54-a9cebb497cb0" xlink:to="loc_us-gaap_LineOfCreditMember_2c4fcfa7-c417-4322-9463-2016941d0cbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e47c615c-cf41-40ca-be47-e13ee04f8f2b" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_dei_LegalEntityAxis_e47c615c-cf41-40ca-be47-e13ee04f8f2b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e47c615c-cf41-40ca-be47-e13ee04f8f2b_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e47c615c-cf41-40ca-be47-e13ee04f8f2b" xlink:to="loc_dei_EntityDomain_e47c615c-cf41-40ca-be47-e13ee04f8f2b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3da13ece-cf7a-4960-9cd4-ad303f27c056" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e47c615c-cf41-40ca-be47-e13ee04f8f2b" xlink:to="loc_dei_EntityDomain_3da13ece-cf7a-4960-9cd4-ad303f27c056" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsResortCollectionMember_9f21910c-2887-4474-905b-e695386244c9" xlink:href="eri-20200930.xsd#eri_CaesarsResortCollectionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3da13ece-cf7a-4960-9cd4-ad303f27c056" xlink:to="loc_eri_CaesarsResortCollectionMember_9f21910c-2887-4474-905b-e695386244c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_afa2ebb5-0c0f-4a22-94b4-7a417ac48533" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_afa2ebb5-0c0f-4a22-94b4-7a417ac48533" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_afa2ebb5-0c0f-4a22-94b4-7a417ac48533_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_afa2ebb5-0c0f-4a22-94b4-7a417ac48533" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_afa2ebb5-0c0f-4a22-94b4-7a417ac48533_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_afa2ebb5-0c0f-4a22-94b4-7a417ac48533" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_10c6bb40-8130-4a3d-8086-1fe1a693f1c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_10c6bb40-8130-4a3d-8086-1fe1a693f1c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_473bd576-40d4-4122-a543-1e6642b5c85a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_473bd576-40d4-4122-a543-1e6642b5c85a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_55079785-ffb1-4fee-95ce-2c6b3a9190e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_55079785-ffb1-4fee-95ce-2c6b3a9190e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_86b9a6e3-4933-4708-ba68-851df6dc55b2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a0c1b64e-ac51-43e0-a9ff-cfaabbe51e40" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_86b9a6e3-4933-4708-ba68-851df6dc55b2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_97c71e8c-6810-48ae-be57-07670d6f7160" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_97c71e8c-6810-48ae-be57-07670d6f7160" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_97c71e8c-6810-48ae-be57-07670d6f7160_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_97c71e8c-6810-48ae-be57-07670d6f7160" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_97c71e8c-6810-48ae-be57-07670d6f7160_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_366889d3-d472-4455-bb9a-d2e1894c5c75" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_97c71e8c-6810-48ae-be57-07670d6f7160" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_366889d3-d472-4455-bb9a-d2e1894c5c75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e989cf35-643d-42a6-87c9-8e88ea1e90ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_366889d3-d472-4455-bb9a-d2e1894c5c75" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e989cf35-643d-42a6-87c9-8e88ea1e90ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_164af0ee-76c8-4bf2-943b-0365ceb15b9d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e989cf35-643d-42a6-87c9-8e88ea1e90ff" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_164af0ee-76c8-4bf2-943b-0365ceb15b9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_719b4832-2cfd-48d1-a105-1533b0db75cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e989cf35-643d-42a6-87c9-8e88ea1e90ff" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_719b4832-2cfd-48d1-a105-1533b0db75cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_fbc1c367-95dd-438d-8cb8-b20392d9edf6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_fbc1c367-95dd-438d-8cb8-b20392d9edf6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_fbc1c367-95dd-438d-8cb8-b20392d9edf6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_fbc1c367-95dd-438d-8cb8-b20392d9edf6" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_fbc1c367-95dd-438d-8cb8-b20392d9edf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_94238574-2172-40f8-8896-b4e0c49695f2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_fbc1c367-95dd-438d-8cb8-b20392d9edf6" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_94238574-2172-40f8-8896-b4e0c49695f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OtherLossIncomeMember_71aed8f3-bfc5-4127-a4b1-2d30e5abf2dd" xlink:href="eri-20200930.xsd#eri_OtherLossIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_94238574-2172-40f8-8896-b4e0c49695f2" xlink:to="loc_eri_OtherLossIncomeMember_71aed8f3-bfc5-4127-a4b1-2d30e5abf2dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_7bed312e-7b4b-4259-938a-33736c9308cc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_45d4623b-3e9c-42f2-a1ca-7011268d8a4f" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_7bed312e-7b4b-4259-938a-33736c9308cc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7bed312e-7b4b-4259-938a-33736c9308cc_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7bed312e-7b4b-4259-938a-33736c9308cc" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7bed312e-7b4b-4259-938a-33736c9308cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_406d17da-d33d-4ab0-a8ad-bb62080547cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7bed312e-7b4b-4259-938a-33736c9308cc" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_406d17da-d33d-4ab0-a8ad-bb62080547cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIPropertiesLPMember_3b96c247-51e8-4ffd-840e-bcd853d4cad3" xlink:href="eri-20200930.xsd#eri_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_406d17da-d33d-4ab0-a8ad-bb62080547cb" xlink:to="loc_eri_VICIPropertiesLPMember_3b96c247-51e8-4ffd-840e-bcd853d4cad3" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtCEISeniorSecuredNotesdue2025Details" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtCEISeniorSecuredNotesdue2025Details"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtCEISeniorSecuredNotesdue2025Details" xlink:type="extended" id="i307e677f78c54af1a82baac883fcf6b3_LongTermDebtCEISeniorSecuredNotesdue2025Details">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_9d1b48a3-78c8-425a-8de1-4ca2d154fbef" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_0eaea491-1ed0-447b-8e07-12805baefa32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d1b48a3-78c8-425a-8de1-4ca2d154fbef" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_0eaea491-1ed0-447b-8e07-12805baefa32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_2eb8ce6e-b19e-42ac-bd57-cb478a49df68" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d1b48a3-78c8-425a-8de1-4ca2d154fbef" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_2eb8ce6e-b19e-42ac-bd57-cb478a49df68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_eac2c237-7d22-48f8-8890-b2f25ba0c446" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d1b48a3-78c8-425a-8de1-4ca2d154fbef" xlink:to="loc_us-gaap_DebtInstrumentTable_eac2c237-7d22-48f8-8890-b2f25ba0c446" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_fa6defcf-eb5d-44ac-b3d4-2be892287c91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_eac2c237-7d22-48f8-8890-b2f25ba0c446" xlink:to="loc_us-gaap_DebtInstrumentAxis_fa6defcf-eb5d-44ac-b3d4-2be892287c91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fa6defcf-eb5d-44ac-b3d4-2be892287c91_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_fa6defcf-eb5d-44ac-b3d4-2be892287c91" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fa6defcf-eb5d-44ac-b3d4-2be892287c91_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fa832809-5a7c-4a71-b127-5afa572cb0a4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_fa6defcf-eb5d-44ac-b3d4-2be892287c91" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fa832809-5a7c-4a71-b127-5afa572cb0a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorSecuredNotesMember_8666a807-d1d0-4132-9738-2488fd666bc3" xlink:href="eri-20200930.xsd#eri_CEISeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fa832809-5a7c-4a71-b127-5afa572cb0a4" xlink:to="loc_eri_CEISeniorSecuredNotesMember_8666a807-d1d0-4132-9738-2488fd666bc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_46479f70-7ac3-43f8-a09b-79235eaef756" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_eac2c237-7d22-48f8-8890-b2f25ba0c446" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_46479f70-7ac3-43f8-a09b-79235eaef756" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_46479f70-7ac3-43f8-a09b-79235eaef756_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_46479f70-7ac3-43f8-a09b-79235eaef756" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_46479f70-7ac3-43f8-a09b-79235eaef756_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4446639b-1bd8-4fbf-832d-3cb58bb60a8e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_46479f70-7ac3-43f8-a09b-79235eaef756" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4446639b-1bd8-4fbf-832d-3cb58bb60a8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_f359072e-22e5-4bf6-abd6-cee98094cd7a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4446639b-1bd8-4fbf-832d-3cb58bb60a8e" xlink:to="loc_us-gaap_SeniorNotesMember_f359072e-22e5-4bf6-abd6-cee98094cd7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_0d104523-e9cc-4129-9f87-e4ddb90c45a8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_eac2c237-7d22-48f8-8890-b2f25ba0c446" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_0d104523-e9cc-4129-9f87-e4ddb90c45a8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0d104523-e9cc-4129-9f87-e4ddb90c45a8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_0d104523-e9cc-4129-9f87-e4ddb90c45a8" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0d104523-e9cc-4129-9f87-e4ddb90c45a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4d310d2a-067f-460a-8a3c-6903d7f7f42c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_0d104523-e9cc-4129-9f87-e4ddb90c45a8" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4d310d2a-067f-460a-8a3c-6903d7f7f42c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0e35dca2-315a-4a48-aa75-d7492e9a1a25" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4d310d2a-067f-460a-8a3c-6903d7f7f42c" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0e35dca2-315a-4a48-aa75-d7492e9a1a25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_97e3d4c9-2c5a-4315-ab10-792de11002e0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0e35dca2-315a-4a48-aa75-d7492e9a1a25" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_97e3d4c9-2c5a-4315-ab10-792de11002e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1bf8b3a4-939f-4aaa-ad1a-e074a5e316f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0e35dca2-315a-4a48-aa75-d7492e9a1a25" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1bf8b3a4-939f-4aaa-ad1a-e074a5e316f4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtCEISeniorNotesdue2027Details" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtCEISeniorNotesdue2027Details"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtCEISeniorNotesdue2027Details" xlink:type="extended" id="i2ec13b34c9d34244b5137d181ae72eb3_LongTermDebtCEISeniorNotesdue2027Details">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_74629ed0-ea1c-4218-9774-8b822e3121ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_9bed886f-314b-4d59-b1e8-53a4f0490fdc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_74629ed0-ea1c-4218-9774-8b822e3121ba" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_9bed886f-314b-4d59-b1e8-53a4f0490fdc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_64424905-0d08-4ace-be7a-360379a539ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_74629ed0-ea1c-4218-9774-8b822e3121ba" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_64424905-0d08-4ace-be7a-360379a539ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_d6c7fb74-ea38-4676-86c5-a7e27e99763d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_74629ed0-ea1c-4218-9774-8b822e3121ba" xlink:to="loc_us-gaap_DebtInstrumentTable_d6c7fb74-ea38-4676-86c5-a7e27e99763d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d6c7fb74-ea38-4676-86c5-a7e27e99763d" xlink:to="loc_us-gaap_DebtInstrumentAxis_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ca8c5331-344f-407b-8000-482d9f53d6b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_290f4b9c-e86c-4c22-ba15-eeb83c8cc47a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ca8c5331-344f-407b-8000-482d9f53d6b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEISeniorNotesDue2027Member_24ab74ed-dfd0-49a4-8ad0-9e7b5789c06d" xlink:href="eri-20200930.xsd#eri_CEISeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ca8c5331-344f-407b-8000-482d9f53d6b3" xlink:to="loc_eri_CEISeniorNotesDue2027Member_24ab74ed-dfd0-49a4-8ad0-9e7b5789c06d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_1cc83733-6162-4f28-80a2-8b4751fcffef" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d6c7fb74-ea38-4676-86c5-a7e27e99763d" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_1cc83733-6162-4f28-80a2-8b4751fcffef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_1cc83733-6162-4f28-80a2-8b4751fcffef_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1cc83733-6162-4f28-80a2-8b4751fcffef" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_1cc83733-6162-4f28-80a2-8b4751fcffef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_092e63c8-404f-451e-bc08-462fa2bbd716" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1cc83733-6162-4f28-80a2-8b4751fcffef" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_092e63c8-404f-451e-bc08-462fa2bbd716" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e8fa2aff-747f-477b-bac7-638fdcb6581b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_092e63c8-404f-451e-bc08-462fa2bbd716" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e8fa2aff-747f-477b-bac7-638fdcb6581b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_684e7eec-b027-463d-9fc7-a12dea62dac1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e8fa2aff-747f-477b-bac7-638fdcb6581b" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_684e7eec-b027-463d-9fc7-a12dea62dac1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_262fce0d-e34f-4c3a-8ea3-2e36bd703162" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e8fa2aff-747f-477b-bac7-638fdcb6581b" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_262fce0d-e34f-4c3a-8ea3-2e36bd703162" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtCRCSeniorSecuredNotesdue2025Details" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtCRCSeniorSecuredNotesdue2025Details"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtCRCSeniorSecuredNotesdue2025Details" xlink:type="extended" id="if9fb01923d8548cfad89f5fc69687c92_LongTermDebtCRCSeniorSecuredNotesdue2025Details">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_c6e348b5-9494-47a1-8854-90a1b08a7a66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_8ae60941-0841-47a0-8d38-64fd568ef229" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c6e348b5-9494-47a1-8854-90a1b08a7a66" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_8ae60941-0841-47a0-8d38-64fd568ef229" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8e64c3e7-6045-4386-b5bd-416902e4230a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c6e348b5-9494-47a1-8854-90a1b08a7a66" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8e64c3e7-6045-4386-b5bd-416902e4230a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_ddfd9ccb-77af-442f-9991-998bd4b6813e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c6e348b5-9494-47a1-8854-90a1b08a7a66" xlink:to="loc_us-gaap_DebtInstrumentTable_ddfd9ccb-77af-442f-9991-998bd4b6813e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_0ca1f9c2-5a63-4c6b-b382-de1338e71212" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ddfd9ccb-77af-442f-9991-998bd4b6813e" xlink:to="loc_us-gaap_DebtInstrumentAxis_0ca1f9c2-5a63-4c6b-b382-de1338e71212" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0ca1f9c2-5a63-4c6b-b382-de1338e71212_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_0ca1f9c2-5a63-4c6b-b382-de1338e71212" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0ca1f9c2-5a63-4c6b-b382-de1338e71212_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ebe13b6d-41af-4b09-90c6-574b23557de7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_0ca1f9c2-5a63-4c6b-b382-de1338e71212" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ebe13b6d-41af-4b09-90c6-574b23557de7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCSeniorSecuredNotesMember_55416e2d-caf6-4b8e-b452-d285b76570da" xlink:href="eri-20200930.xsd#eri_CRCSeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ebe13b6d-41af-4b09-90c6-574b23557de7" xlink:to="loc_eri_CRCSeniorSecuredNotesMember_55416e2d-caf6-4b8e-b452-d285b76570da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ddfd9ccb-77af-442f-9991-998bd4b6813e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_625e941e-7ea7-483d-8de4-387061638e32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_009eee73-0f5f-492b-8f59-3cc0ebcfbaf9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_625e941e-7ea7-483d-8de4-387061638e32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_863f4e99-7073-41ef-af54-42cf782d8743" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_625e941e-7ea7-483d-8de4-387061638e32" xlink:to="loc_us-gaap_SeniorNotesMember_863f4e99-7073-41ef-af54-42cf782d8743" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_f2294858-7435-4175-9a41-eaa6fb6b384d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ddfd9ccb-77af-442f-9991-998bd4b6813e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_f2294858-7435-4175-9a41-eaa6fb6b384d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f2294858-7435-4175-9a41-eaa6fb6b384d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_f2294858-7435-4175-9a41-eaa6fb6b384d" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f2294858-7435-4175-9a41-eaa6fb6b384d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_de125ba3-5622-4122-ada3-670ec4c367eb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_f2294858-7435-4175-9a41-eaa6fb6b384d" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_de125ba3-5622-4122-ada3-670ec4c367eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_cb31db4d-91cd-41ca-b37f-e8efeff4b4dd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_de125ba3-5622-4122-ada3-670ec4c367eb" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_cb31db4d-91cd-41ca-b37f-e8efeff4b4dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_384560f6-8020-453b-bb9c-3b504112c9b9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_cb31db4d-91cd-41ca-b37f-e8efeff4b4dd" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_384560f6-8020-453b-bb9c-3b504112c9b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_92bd9cdb-5b68-4d4b-98a4-319e6cb6dfd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_cb31db4d-91cd-41ca-b37f-e8efeff4b4dd" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_92bd9cdb-5b68-4d4b-98a4-319e6cb6dfd7" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtCEIRevolvingCreditFacilityDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtCEIRevolvingCreditFacilityDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtCEIRevolvingCreditFacilityDetails" xlink:type="extended" id="i6e00f1f3e4784c9eb82a8b3a71c8f668_LongTermDebtCEIRevolvingCreditFacilityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_5dd79374-dffa-4a63-8dd5-6d3172f82637" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_DebtInstrumentTerm_5dd79374-dffa-4a63-8dd5-6d3172f82637" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_068c2142-6935-440a-91fa-6da947b92245" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_068c2142-6935-440a-91fa-6da947b92245" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_127f59fb-07b5-414a-8c1a-f410fbd24f02" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_127f59fb-07b5-414a-8c1a-f410fbd24f02" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_72599295-917f-414d-a569-0d2556966535" xlink:href="eri-20200930.xsd#eri_DebtInstrumentCovenantLeverageRatioMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_72599295-917f-414d-a569-0d2556966535" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_dd42e2f3-13f3-44ed-ac1c-fff809aac03f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_dd42e2f3-13f3-44ed-ac1c-fff809aac03f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DebtInstrumentCovenantLeverageRatioMinimum_8a1dd283-d2f5-4978-89e0-002576da292d" xlink:href="eri-20200930.xsd#eri_DebtInstrumentCovenantLeverageRatioMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_eri_DebtInstrumentCovenantLeverageRatioMinimum_8a1dd283-d2f5-4978-89e0-002576da292d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_84f0d409-9724-42bc-ace3-988549068afd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_84f0d409-9724-42bc-ace3-988549068afd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_94446a1c-3f2b-48a4-a4aa-0178942ee0f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_94446a1c-3f2b-48a4-a4aa-0178942ee0f4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_a5dded21-c1de-4fdf-86c4-ac6869db3528" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_LineOfCredit_a5dded21-c1de-4fdf-86c4-ac6869db3528" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ccddf39d-023e-48eb-a556-54829fb20efd" xlink:to="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_d528e9c4-0145-47fb-856f-7261eda01c69" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:to="loc_us-gaap_CreditFacilityAxis_d528e9c4-0145-47fb-856f-7261eda01c69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_d528e9c4-0145-47fb-856f-7261eda01c69_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_d528e9c4-0145-47fb-856f-7261eda01c69" xlink:to="loc_us-gaap_CreditFacilityDomain_d528e9c4-0145-47fb-856f-7261eda01c69_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_d528e9c4-0145-47fb-856f-7261eda01c69" xlink:to="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_d42fc81a-16b5-4e34-b5ec-1337bd580eb5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_d42fc81a-16b5-4e34-b5ec-1337bd580eb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEIRevolvingCreditFacilityMember_831c87a6-16fd-48ba-aa79-ef6ddad0a728" xlink:href="eri-20200930.xsd#eri_CEIRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:to="loc_eri_CEIRevolvingCreditFacilityMember_831c87a6-16fd-48ba-aa79-ef6ddad0a728" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_4291c245-2fe7-45ec-aeb1-a419f868d0e9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:to="loc_us-gaap_LetterOfCreditMember_4291c245-2fe7-45ec-aeb1-a419f868d0e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember_d319c2c2-39a1-4cec-89b1-8f5019162548" xlink:href="eri-20200930.xsd#eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_868be059-f929-49fe-9024-1c3a138aceaa" xlink:to="loc_eri_RevolvingCreditFacilityUnderSecuredCreditFacilityMember_d319c2c2-39a1-4cec-89b1-8f5019162548" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_fad48d01-1568-418d-b8f0-07fcb17310e8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_fad48d01-1568-418d-b8f0-07fcb17310e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_fad48d01-1568-418d-b8f0-07fcb17310e8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_fad48d01-1568-418d-b8f0-07fcb17310e8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_fad48d01-1568-418d-b8f0-07fcb17310e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a4b4aff5-ec0a-454c-8bee-bdcdf8356ff4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_fad48d01-1568-418d-b8f0-07fcb17310e8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a4b4aff5-ec0a-454c-8bee-bdcdf8356ff4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_e04e9fbb-5249-4d20-924d-3de3b4ba405a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a4b4aff5-ec0a-454c-8bee-bdcdf8356ff4" xlink:to="loc_us-gaap_LineOfCreditMember_e04e9fbb-5249-4d20-924d-3de3b4ba405a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_927f8376-d49e-4ef7-83a0-68cf37bb7db2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:to="loc_us-gaap_DebtInstrumentAxis_927f8376-d49e-4ef7-83a0-68cf37bb7db2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_927f8376-d49e-4ef7-83a0-68cf37bb7db2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_927f8376-d49e-4ef7-83a0-68cf37bb7db2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_927f8376-d49e-4ef7-83a0-68cf37bb7db2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_38a76a8d-8c0b-4f2a-9b61-1a6d3cb2347c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_927f8376-d49e-4ef7-83a0-68cf37bb7db2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_38a76a8d-8c0b-4f2a-9b61-1a6d3cb2347c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CEIRevolvingCreditFacilityMember_726a9e80-57dc-4f89-aa9f-592afc31d809" xlink:href="eri-20200930.xsd#eri_CEIRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_38a76a8d-8c0b-4f2a-9b61-1a6d3cb2347c" xlink:to="loc_eri_CEIRevolvingCreditFacilityMember_726a9e80-57dc-4f89-aa9f-592afc31d809" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_3c429a5e-ff20-4a15-b0cc-558393773859" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6a66d1e2-584f-4884-9523-fb85853b0f41" xlink:to="loc_us-gaap_VariableRateAxis_3c429a5e-ff20-4a15-b0cc-558393773859" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_3c429a5e-ff20-4a15-b0cc-558393773859_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_3c429a5e-ff20-4a15-b0cc-558393773859" xlink:to="loc_us-gaap_VariableRateDomain_3c429a5e-ff20-4a15-b0cc-558393773859_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_3c429a5e-ff20-4a15-b0cc-558393773859" xlink:to="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_66fa9c27-ef67-4820-a540-0c3a5fcefd29" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_66fa9c27-ef67-4820-a540-0c3a5fcefd29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_af8fdbb0-b950-4fae-95ba-8e4323068468" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_af8fdbb0-b950-4fae-95ba-8e4323068468" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrimeRateMember_d7fbe90f-48df-4119-9934-e28e3ca2163f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrimeRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:to="loc_us-gaap_PrimeRateMember_d7fbe90f-48df-4119-9934-e28e3ca2163f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_fb77ea19-c3d3-40af-a6a9-c11e8f5aef20" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_faf3e66f-ce93-43b7-aee1-1690b77a466e" xlink:to="loc_us-gaap_BaseRateMember_fb77ea19-c3d3-40af-a6a9-c11e8f5aef20" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtConventionCenterMortgageLoanDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtConventionCenterMortgageLoanDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtConventionCenterMortgageLoanDetails" xlink:type="extended" id="i44308e2928c24cc2a8406732167d4ce4_LongTermDebtConventionCenterMortgageLoanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtTerm_3e5b23df-3ce7-48a8-8241-fa2e3ed10420" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:to="loc_us-gaap_LongTermDebtTerm_3e5b23df-3ce7-48a8-8241-fa2e3ed10420" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_288dede6-871b-42d8-9cb1-2b7caf51149e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:to="loc_us-gaap_LongTermDebt_288dede6-871b-42d8-9cb1-2b7caf51149e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_d069127b-941e-4e19-90fd-1655f30a690f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_d069127b-941e-4e19-90fd-1655f30a690f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_728e9d75-d47b-452b-8811-026f644fc3e3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_728e9d75-d47b-452b-8811-026f644fc3e3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_13227e8e-7c37-4116-ab1d-e517292fd611" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ec71d11a-5769-43fc-b90e-67667c07ae5d" xlink:to="loc_us-gaap_DebtInstrumentTable_13227e8e-7c37-4116-ab1d-e517292fd611" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_81edcaf5-db08-4ff2-9582-e4b46905a2a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_13227e8e-7c37-4116-ab1d-e517292fd611" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_81edcaf5-db08-4ff2-9582-e4b46905a2a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_81edcaf5-db08-4ff2-9582-e4b46905a2a5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_81edcaf5-db08-4ff2-9582-e4b46905a2a5" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_81edcaf5-db08-4ff2-9582-e4b46905a2a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_c17f748d-b401-46d1-8104-0bea180fecd3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_81edcaf5-db08-4ff2-9582-e4b46905a2a5" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_c17f748d-b401-46d1-8104-0bea180fecd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIPropertiesLPMember_85b6063a-214d-4cdf-83c6-153b475f45a6" xlink:href="eri-20200930.xsd#eri_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_c17f748d-b401-46d1-8104-0bea180fecd3" xlink:to="loc_eri_VICIPropertiesLPMember_85b6063a-214d-4cdf-83c6-153b475f45a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_13227e8e-7c37-4116-ab1d-e517292fd611" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a13bfaf3-e2da-4d15-9ab9-fd2a6450446a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_f1f5f8e0-318b-47ee-bac2-0d47a6ccf122" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a13bfaf3-e2da-4d15-9ab9-fd2a6450446a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_VICIPropertiesLPMember_c966b201-c207-4a9e-9bde-bc3764990f28" xlink:href="eri-20200930.xsd#eri_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a13bfaf3-e2da-4d15-9ab9-fd2a6450446a" xlink:to="loc_eri_VICIPropertiesLPMember_c966b201-c207-4a9e-9bde-bc3764990f28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_2274664a-e5e9-40e6-bbe5-d263163f43ac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_13227e8e-7c37-4116-ab1d-e517292fd611" xlink:to="loc_us-gaap_DebtInstrumentAxis_2274664a-e5e9-40e6-bbe5-d263163f43ac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2274664a-e5e9-40e6-bbe5-d263163f43ac_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_2274664a-e5e9-40e6-bbe5-d263163f43ac" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2274664a-e5e9-40e6-bbe5-d263163f43ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c91cf2a3-e259-48b3-bacd-8844d5ae060a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_2274664a-e5e9-40e6-bbe5-d263163f43ac" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c91cf2a3-e259-48b3-bacd-8844d5ae060a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ConventionCenterMortgageLoanMember_f96ac140-cec6-4a60-806d-fdaed7379eda" xlink:href="eri-20200930.xsd#eri_ConventionCenterMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c91cf2a3-e259-48b3-bacd-8844d5ae060a" xlink:to="loc_eri_ConventionCenterMortgageLoanMember_f96ac140-cec6-4a60-806d-fdaed7379eda" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtAssumedDebtActivityDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtAssumedDebtActivityDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtAssumedDebtActivityDetails" xlink:type="extended" id="i2c5e0907bf3444efafedf756d23edcb5_LongTermDebtAssumedDebtActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_98e253ad-9c07-453c-bb0a-2263161e0349" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_98e253ad-9c07-453c-bb0a-2263161e0349" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_2791e6e5-5455-4ee9-a1c1-aef6a793da03" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_DebtInstrumentTerm_2791e6e5-5455-4ee9-a1c1-aef6a793da03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_22b48273-d028-4baa-b910-2efa950a4e37" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_22b48273-d028-4baa-b910-2efa950a4e37" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_d251dc72-2b97-419d-a355-2f348d4c4458" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_d251dc72-2b97-419d-a355-2f348d4c4458" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_d71d8b90-0431-4bd7-b6ff-da049f1dcaac" xlink:href="eri-20200930.xsd#eri_DebtInstrumentCovenantLeverageRatioMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_d71d8b90-0431-4bd7-b6ff-da049f1dcaac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_655fd3f7-cbe8-4ddb-b633-3b8ca4b92a36" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_655fd3f7-cbe8-4ddb-b633-3b8ca4b92a36" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_dfc84ac7-38ae-4da4-80d7-d27b9674b43d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_dfc84ac7-38ae-4da4-80d7-d27b9674b43d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72445082-60c2-4d25-9e41-1cd74d8d9c18" xlink:to="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_051cd33f-9f00-44cd-812e-d1307898e2d1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_us-gaap_CreditFacilityAxis_051cd33f-9f00-44cd-812e-d1307898e2d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_051cd33f-9f00-44cd-812e-d1307898e2d1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_051cd33f-9f00-44cd-812e-d1307898e2d1" xlink:to="loc_us-gaap_CreditFacilityDomain_051cd33f-9f00-44cd-812e-d1307898e2d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3b3e593f-d0c3-42eb-aef2-f85f25ce6e32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_051cd33f-9f00-44cd-812e-d1307898e2d1" xlink:to="loc_us-gaap_CreditFacilityDomain_3b3e593f-d0c3-42eb-aef2-f85f25ce6e32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCRevolvingCreditFacilityMember_c6d4fae2-8043-49c2-87c8-80599cdf3a4e" xlink:href="eri-20200930.xsd#eri_CRCRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_3b3e593f-d0c3-42eb-aef2-f85f25ce6e32" xlink:to="loc_eri_CRCRevolvingCreditFacilityMember_c6d4fae2-8043-49c2-87c8-80599cdf3a4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCTermLoanMember_4cc33213-c549-4e4e-92ef-a2d0a27ac133" xlink:href="eri-20200930.xsd#eri_CRCTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_3b3e593f-d0c3-42eb-aef2-f85f25ce6e32" xlink:to="loc_eri_CRCTermLoanMember_4cc33213-c549-4e4e-92ef-a2d0a27ac133" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_aad8766c-1dc0-43fc-b6b7-651cba1e6ec8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_3b3e593f-d0c3-42eb-aef2-f85f25ce6e32" xlink:to="loc_us-gaap_LetterOfCreditMember_aad8766c-1dc0-43fc-b6b7-651cba1e6ec8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_609441fc-eec1-4513-947e-3e275c6ff120" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_609441fc-eec1-4513-947e-3e275c6ff120" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_609441fc-eec1-4513-947e-3e275c6ff120_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_609441fc-eec1-4513-947e-3e275c6ff120" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_609441fc-eec1-4513-947e-3e275c6ff120_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ca1bc542-5665-4ed2-ba00-7b84a10e3299" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_609441fc-eec1-4513-947e-3e275c6ff120" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ca1bc542-5665-4ed2-ba00-7b84a10e3299" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_d3b4ad95-8442-4553-91be-b235caf9c20c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_ca1bc542-5665-4ed2-ba00-7b84a10e3299" xlink:to="loc_us-gaap_LineOfCreditMember_d3b4ad95-8442-4553-91be-b235caf9c20c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_da6bdb2f-3441-415d-95dd-a5aba948c72f" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_dei_LegalEntityAxis_da6bdb2f-3441-415d-95dd-a5aba948c72f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_da6bdb2f-3441-415d-95dd-a5aba948c72f_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_da6bdb2f-3441-415d-95dd-a5aba948c72f" xlink:to="loc_dei_EntityDomain_da6bdb2f-3441-415d-95dd-a5aba948c72f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3ad80692-546e-4fa5-8303-4cb261f03c45" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_da6bdb2f-3441-415d-95dd-a5aba948c72f" xlink:to="loc_dei_EntityDomain_3ad80692-546e-4fa5-8303-4cb261f03c45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsResortCollectionMember_726f5b81-12d4-464d-aa32-32b932eecd8a" xlink:href="eri-20200930.xsd#eri_CaesarsResortCollectionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3ad80692-546e-4fa5-8303-4cb261f03c45" xlink:to="loc_eri_CaesarsResortCollectionMember_726f5b81-12d4-464d-aa32-32b932eecd8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_37a28ac8-f081-4e13-8f7e-beee766b26ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_us-gaap_DebtInstrumentAxis_37a28ac8-f081-4e13-8f7e-beee766b26ba" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_37a28ac8-f081-4e13-8f7e-beee766b26ba_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_37a28ac8-f081-4e13-8f7e-beee766b26ba" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_37a28ac8-f081-4e13-8f7e-beee766b26ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_37a28ac8-f081-4e13-8f7e-beee766b26ba" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FirstLienTermLoanMember_985493be-13aa-4937-bcbe-efcfe19ff4e8" xlink:href="eri-20200930.xsd#eri_FirstLienTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:to="loc_eri_FirstLienTermLoanMember_985493be-13aa-4937-bcbe-efcfe19ff4e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCCreditAgreementMember_a29a259b-da41-46a7-b8e2-3a1dd27612f7" xlink:href="eri-20200930.xsd#eri_CRCCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:to="loc_eri_CRCCreditAgreementMember_a29a259b-da41-46a7-b8e2-3a1dd27612f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCTermLoanMember_27c7f07d-71f6-496c-a906-d63a5c9f8491" xlink:href="eri-20200930.xsd#eri_CRCTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:to="loc_eri_CRCTermLoanMember_27c7f07d-71f6-496c-a906-d63a5c9f8491" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCIncrementalTermLoanMember_ed1ee018-741a-4b43-a5bd-32c24010a6e4" xlink:href="eri-20200930.xsd#eri_CRCIncrementalTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:to="loc_eri_CRCIncrementalTermLoanMember_ed1ee018-741a-4b43-a5bd-32c24010a6e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A525CRCNotesDue2025Member_1b808f52-8c46-44bd-a2eb-fc00db0998b2" xlink:href="eri-20200930.xsd#eri_A525CRCNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e367365-1e1e-4b00-a8ba-62674940b73b" xlink:to="loc_eri_A525CRCNotesDue2025Member_1b808f52-8c46-44bd-a2eb-fc00db0998b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_00673c9d-c514-4d1c-908f-7bfd508a6daa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_us-gaap_VariableRateAxis_00673c9d-c514-4d1c-908f-7bfd508a6daa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_00673c9d-c514-4d1c-908f-7bfd508a6daa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_00673c9d-c514-4d1c-908f-7bfd508a6daa" xlink:to="loc_us-gaap_VariableRateDomain_00673c9d-c514-4d1c-908f-7bfd508a6daa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_f7a76b3a-180c-4358-bb2f-7d481291e8be" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_00673c9d-c514-4d1c-908f-7bfd508a6daa" xlink:to="loc_us-gaap_VariableRateDomain_f7a76b3a-180c-4358-bb2f-7d481291e8be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_80019fab-4521-4119-91e5-390a6795b6a8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_f7a76b3a-180c-4358-bb2f-7d481291e8be" xlink:to="loc_us-gaap_BaseRateMember_80019fab-4521-4119-91e5-390a6795b6a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e5e3a5cd-ea39-4465-bf1a-e65a9be512b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_f7a76b3a-180c-4358-bb2f-7d481291e8be" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e5e3a5cd-ea39-4465-bf1a-e65a9be512b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_d5bfc9e4-884f-4d70-b3e1-60e7ba25fb3a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_f7a76b3a-180c-4358-bb2f-7d481291e8be" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_d5bfc9e4-884f-4d70-b3e1-60e7ba25fb3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_05675371-e3c3-41a0-9d4f-76d2ee25095a" xlink:to="loc_srt_RangeAxis_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8" xlink:to="loc_srt_RangeMember_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e356aaf3-6b7d-495d-991c-7d76a0fbd923" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_0b6ef0ea-2ed8-4e49-a95a-5f1ed3064bf8" xlink:to="loc_srt_RangeMember_e356aaf3-6b7d-495d-991c-7d76a0fbd923" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_031296d1-c679-4d16-8ec3-504aeee931bb" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e356aaf3-6b7d-495d-991c-7d76a0fbd923" xlink:to="loc_srt_MinimumMember_031296d1-c679-4d16-8ec3-504aeee931bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_b66b687e-c306-4c0e-8030-c788ecbeaf3e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e356aaf3-6b7d-495d-991c-7d76a0fbd923" xlink:to="loc_srt_MaximumMember_b66b687e-c306-4c0e-8030-c788ecbeaf3e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtCRCNotesDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtCRCNotesDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtCRCNotesDetails" xlink:type="extended" id="i7d52f73a3e1040729f11c60dd05cb612_LongTermDebtCRCNotesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_2b9da9e9-55cc-4990-8eb9-52f7e22fc8ee" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_c9033a04-6680-472f-899c-ff71ea8b0b09" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2b9da9e9-55cc-4990-8eb9-52f7e22fc8ee" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_c9033a04-6680-472f-899c-ff71ea8b0b09" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_49ccc9d8-8255-45ff-929e-06f1677304fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2b9da9e9-55cc-4990-8eb9-52f7e22fc8ee" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_49ccc9d8-8255-45ff-929e-06f1677304fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_1f477b8f-aa04-4997-be90-780ae28cbf29" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2b9da9e9-55cc-4990-8eb9-52f7e22fc8ee" xlink:to="loc_us-gaap_DebtInstrumentTable_1f477b8f-aa04-4997-be90-780ae28cbf29" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_c75538d8-b453-428d-90e3-1773d6cc6b37" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1f477b8f-aa04-4997-be90-780ae28cbf29" xlink:to="loc_us-gaap_DebtInstrumentAxis_c75538d8-b453-428d-90e3-1773d6cc6b37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c75538d8-b453-428d-90e3-1773d6cc6b37_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_c75538d8-b453-428d-90e3-1773d6cc6b37" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c75538d8-b453-428d-90e3-1773d6cc6b37_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_faae42b8-6251-4817-a1e6-67ff198eaac4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_c75538d8-b453-428d-90e3-1773d6cc6b37" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_faae42b8-6251-4817-a1e6-67ff198eaac4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A525CRCNotesDue2025Member_3f478fc5-14f0-49eb-8eeb-64d7596038b7" xlink:href="eri-20200930.xsd#eri_A525CRCNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_faae42b8-6251-4817-a1e6-67ff198eaac4" xlink:to="loc_eri_A525CRCNotesDue2025Member_3f478fc5-14f0-49eb-8eeb-64d7596038b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4cbed85e-f8d5-482b-942e-8f3aed0a1e02" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1f477b8f-aa04-4997-be90-780ae28cbf29" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4cbed85e-f8d5-482b-942e-8f3aed0a1e02" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4cbed85e-f8d5-482b-942e-8f3aed0a1e02_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4cbed85e-f8d5-482b-942e-8f3aed0a1e02" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4cbed85e-f8d5-482b-942e-8f3aed0a1e02_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e5d20a35-2c8f-4de2-9f11-4096308e502b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4cbed85e-f8d5-482b-942e-8f3aed0a1e02" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e5d20a35-2c8f-4de2-9f11-4096308e502b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_fdd92a8c-59fe-479a-afd1-33a9b03209e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e5d20a35-2c8f-4de2-9f11-4096308e502b" xlink:to="loc_us-gaap_SeniorNotesMember_fdd92a8c-59fe-479a-afd1-33a9b03209e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_6572e9b0-8356-4497-9491-82789f377121" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1f477b8f-aa04-4997-be90-780ae28cbf29" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_6572e9b0-8356-4497-9491-82789f377121" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_6572e9b0-8356-4497-9491-82789f377121_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6572e9b0-8356-4497-9491-82789f377121" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6572e9b0-8356-4497-9491-82789f377121_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_788b82f8-5800-4ed6-8cd6-ca9530ddcf00" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6572e9b0-8356-4497-9491-82789f377121" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_788b82f8-5800-4ed6-8cd6-ca9530ddcf00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_ea2767e9-89fa-4ff6-b056-8e0ee8f4d0b4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_788b82f8-5800-4ed6-8cd6-ca9530ddcf00" xlink:to="loc_us-gaap_SubsequentEventMember_ea2767e9-89fa-4ff6-b056-8e0ee8f4d0b4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtFormerCaesars5ConvertibleNotesDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtFormerCaesars5ConvertibleNotesDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtFormerCaesars5ConvertibleNotesDetails" xlink:type="extended" id="ibfbbe3e4cad34e4b8d78a36ad6d74b40_LongTermDebtFormerCaesars5ConvertibleNotesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_894452c7-3a81-465f-9a49-46f7d95b7fd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_894452c7-3a81-465f-9a49-46f7d95b7fd7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_21c6e899-1273-4880-a6e4-d31b29f36a3d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_21c6e899-1273-4880-a6e4-d31b29f36a3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionConvertedInstrumentSharesIssued1_640cf06a-4221-480b-91db-4c5d9e846a4e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentSharesIssued1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_DebtConversionConvertedInstrumentSharesIssued1_640cf06a-4221-480b-91db-4c5d9e846a4e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_267b0567-7781-40be-a78a-3659bfdc6e2d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_267b0567-7781-40be-a78a-3659bfdc6e2d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_fba5a16b-72cb-48df-a05e-54d9030cf08c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_fba5a16b-72cb-48df-a05e-54d9030cf08c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_1e35426b-be3a-4df1-8fb8-7d17226ae677" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b820de9f-68b0-48a5-a773-441b8cac54d5" xlink:to="loc_us-gaap_DebtInstrumentTable_1e35426b-be3a-4df1-8fb8-7d17226ae677" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_aab47b4a-80f8-49d7-ad14-4286a17ce7d7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1e35426b-be3a-4df1-8fb8-7d17226ae677" xlink:to="loc_us-gaap_DebtInstrumentAxis_aab47b4a-80f8-49d7-ad14-4286a17ce7d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_aab47b4a-80f8-49d7-ad14-4286a17ce7d7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_aab47b4a-80f8-49d7-ad14-4286a17ce7d7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_aab47b4a-80f8-49d7-ad14-4286a17ce7d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2e8330bb-7460-427f-b44b-7f34f3aac4bf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_aab47b4a-80f8-49d7-ad14-4286a17ce7d7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2e8330bb-7460-427f-b44b-7f34f3aac4bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FormerCaesars5ConvertibleNotesMember_2d634478-ccf9-4a28-a852-16e67607de82" xlink:href="eri-20200930.xsd#eri_FormerCaesars5ConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2e8330bb-7460-427f-b44b-7f34f3aac4bf" xlink:to="loc_eri_FormerCaesars5ConvertibleNotesMember_2d634478-ccf9-4a28-a852-16e67607de82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1e35426b-be3a-4df1-8fb8-7d17226ae677" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e3e8cb9e-c601-4013-bbb4-915735c833a1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a3bb9348-f9cc-4b49-bff1-cb47f68bbe13" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e3e8cb9e-c601-4013-bbb4-915735c833a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_8d25de42-2bdc-4495-86fb-ab4c8da6ad4e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e3e8cb9e-c601-4013-bbb4-915735c833a1" xlink:to="loc_us-gaap_SeniorNotesMember_8d25de42-2bdc-4495-86fb-ab4c8da6ad4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_4e965bfd-b665-4f5e-9318-9c6b3d1240f2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1e35426b-be3a-4df1-8fb8-7d17226ae677" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_4e965bfd-b665-4f5e-9318-9c6b3d1240f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4e965bfd-b665-4f5e-9318-9c6b3d1240f2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4e965bfd-b665-4f5e-9318-9c6b3d1240f2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4e965bfd-b665-4f5e-9318-9c6b3d1240f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_ab865a90-5b09-463b-bab9-89dec4ec8cfd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4e965bfd-b665-4f5e-9318-9c6b3d1240f2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_ab865a90-5b09-463b-bab9-89dec4ec8cfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_f4910445-ca30-473c-aee9-957059699d42" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_ab865a90-5b09-463b-bab9-89dec4ec8cfd" xlink:to="loc_us-gaap_SubsequentEventMember_f4910445-ca30-473c-aee9-957059699d42" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtScheduleofDebtDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtScheduleofDebtDetails" xlink:type="extended" id="id168b9cc7c614e03a7d2c259aa55fd2b_LongTermDebtScheduleofDebtDetails"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtLumiereLoanDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtLumiereLoanDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtLumiereLoanDetails" xlink:type="extended" id="i37ea59de41cd418c97babacbca7f2fb8_LongTermDebtLumiereLoanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d6999bee-b527-46ef-9c32-7989e6472e1d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_7d122af9-5419-47b6-aa40-b812897e58c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d6999bee-b527-46ef-9c32-7989e6472e1d" xlink:to="loc_us-gaap_NotesPayable_7d122af9-5419-47b6-aa40-b812897e58c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_40d2557a-aa75-4a68-b121-f1afa0a73455" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d6999bee-b527-46ef-9c32-7989e6472e1d" xlink:to="loc_us-gaap_DebtInstrumentTable_40d2557a-aa75-4a68-b121-f1afa0a73455" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_027f6810-6341-45a0-a62c-a5448da026d1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_40d2557a-aa75-4a68-b121-f1afa0a73455" xlink:to="loc_us-gaap_DebtInstrumentAxis_027f6810-6341-45a0-a62c-a5448da026d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_027f6810-6341-45a0-a62c-a5448da026d1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_027f6810-6341-45a0-a62c-a5448da026d1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_027f6810-6341-45a0-a62c-a5448da026d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7ac79c82-4de6-48be-a265-b15b9206dafe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_027f6810-6341-45a0-a62c-a5448da026d1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7ac79c82-4de6-48be-a265-b15b9206dafe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LumiereLoanMember_51718db5-df1d-4fff-ae42-7c58eef80da8" xlink:href="eri-20200930.xsd#eri_LumiereLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7ac79c82-4de6-48be-a265-b15b9206dafe" xlink:to="loc_eri_LumiereLoanMember_51718db5-df1d-4fff-ae42-7c58eef80da8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1de98191-5708-4be1-9e9a-7d2d4a14c14e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_40d2557a-aa75-4a68-b121-f1afa0a73455" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1de98191-5708-4be1-9e9a-7d2d4a14c14e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1de98191-5708-4be1-9e9a-7d2d4a14c14e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1de98191-5708-4be1-9e9a-7d2d4a14c14e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1de98191-5708-4be1-9e9a-7d2d4a14c14e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_07e6ddc3-b178-4ff1-a94d-6f6dc87011a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1de98191-5708-4be1-9e9a-7d2d4a14c14e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_07e6ddc3-b178-4ff1-a94d-6f6dc87011a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_GamingAndLeisurePropertiesMember_80dd92f9-3f5c-46fe-892c-c3de100ae441" xlink:href="eri-20200930.xsd#eri_GamingAndLeisurePropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_07e6ddc3-b178-4ff1-a94d-6f6dc87011a5" xlink:to="loc_eri_GamingAndLeisurePropertiesMember_80dd92f9-3f5c-46fe-892c-c3de100ae441" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LongTermDebtDebtCovenantComplianceDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LongTermDebtDebtCovenantComplianceDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LongTermDebtDebtCovenantComplianceDetails" xlink:type="extended" id="i74ed8581f1f74cf19e79b07214a16a59_LongTermDebtDebtCovenantComplianceDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d6ef62f9-6dc7-4757-9999-7da95b619282" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_cbb3053b-96d5-4d89-92c8-7b602c0994c9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d6ef62f9-6dc7-4757-9999-7da95b619282" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_cbb3053b-96d5-4d89-92c8-7b602c0994c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_c2a350f9-0f43-43b2-8137-79d0d5ec5597" xlink:href="eri-20200930.xsd#eri_DebtInstrumentCovenantLeverageRatioMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d6ef62f9-6dc7-4757-9999-7da95b619282" xlink:to="loc_eri_DebtInstrumentCovenantLeverageRatioMaximum_c2a350f9-0f43-43b2-8137-79d0d5ec5597" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_39669f2c-bce0-4445-a37a-5ab281414828" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d6ef62f9-6dc7-4757-9999-7da95b619282" xlink:to="loc_us-gaap_DebtInstrumentTable_39669f2c-bce0-4445-a37a-5ab281414828" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_39669f2c-bce0-4445-a37a-5ab281414828" xlink:to="loc_us-gaap_DebtInstrumentAxis_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_af99643b-5ec7-43f6-83b9-5c516afafe21" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5421b98f-e7d4-4c18-8b1f-c3c3e7237b08" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_af99643b-5ec7-43f6-83b9-5c516afafe21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCSeniorSecuredNotesMember_82aa9cae-5cf4-40ef-9903-b0ae499542a0" xlink:href="eri-20200930.xsd#eri_CRCSeniorSecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_af99643b-5ec7-43f6-83b9-5c516afafe21" xlink:to="loc_eri_CRCSeniorSecuredNotesMember_82aa9cae-5cf4-40ef-9903-b0ae499542a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCSeniorSecuredNotesDue2025Member_01970de6-f12b-46a6-b2a2-ac53abc57e54" xlink:href="eri-20200930.xsd#eri_CRCSeniorSecuredNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_af99643b-5ec7-43f6-83b9-5c516afafe21" xlink:to="loc_eri_CRCSeniorSecuredNotesDue2025Member_01970de6-f12b-46a6-b2a2-ac53abc57e54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_39669f2c-bce0-4445-a37a-5ab281414828" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9e9a5f55-0b3d-4891-a1e3-d26070500014" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bef298fb-d27f-4d3d-a6ec-beacb03c0aa5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9e9a5f55-0b3d-4891-a1e3-d26070500014" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_efeaa6bd-c2c7-4a55-9061-947b09f5f33a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9e9a5f55-0b3d-4891-a1e3-d26070500014" xlink:to="loc_us-gaap_SeniorNotesMember_efeaa6bd-c2c7-4a55-9061-947b09f5f33a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_a9a62d9c-9937-4ee9-aebe-3d7e904c6836" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_39669f2c-bce0-4445-a37a-5ab281414828" xlink:to="loc_us-gaap_CreditFacilityAxis_a9a62d9c-9937-4ee9-aebe-3d7e904c6836" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_a9a62d9c-9937-4ee9-aebe-3d7e904c6836_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_a9a62d9c-9937-4ee9-aebe-3d7e904c6836" xlink:to="loc_us-gaap_CreditFacilityDomain_a9a62d9c-9937-4ee9-aebe-3d7e904c6836_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_8bd9d630-7b78-43ca-9c5a-07a30d205ee8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_a9a62d9c-9937-4ee9-aebe-3d7e904c6836" xlink:to="loc_us-gaap_CreditFacilityDomain_8bd9d630-7b78-43ca-9c5a-07a30d205ee8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCRevolvingCreditFacilityMember_f4f8b76d-3159-42d3-9f58-0fdee604743f" xlink:href="eri-20200930.xsd#eri_CRCRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_8bd9d630-7b78-43ca-9c5a-07a30d205ee8" xlink:to="loc_eri_CRCRevolvingCreditFacilityMember_f4f8b76d-3159-42d3-9f58-0fdee604743f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurements" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurements"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurements" xlink:type="extended" id="ie52477d73a6042a5913a5d3d7e09eab1_FairValueMeasurements"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsTables" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsTables" xlink:type="extended" id="i3fb0ea0409ee4e25ac3a2ac092da2442_FairValueMeasurementsTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofAssetsMeasuredatFairValueonaRecurringBasisDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsScheduleofAssetsMeasuredatFairValueonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofAssetsMeasuredatFairValueonaRecurringBasisDetails" xlink:type="extended" id="ie1a4b144ce3141c995b90c0b4ab7e824_FairValueMeasurementsScheduleofAssetsMeasuredatFairValueonaRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a6264322-e02e-44fc-8638-93ec17f162cd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_e3fda506-bf67-4aa8-943d-d7d482fde3a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a6264322-e02e-44fc-8638-93ec17f162cd" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_e3fda506-bf67-4aa8-943d-d7d482fde3a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestments_404c399a-d978-4fe8-8986-f3a1cf26883b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_e3fda506-bf67-4aa8-943d-d7d482fde3a9" xlink:to="loc_us-gaap_RestrictedCashAndInvestments_404c399a-d978-4fe8-8986-f3a1cf26883b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_d22fc5c2-a4be-4245-84b0-dd3202045e25" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_e3fda506-bf67-4aa8-943d-d7d482fde3a9" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_d22fc5c2-a4be-4245-84b0-dd3202045e25" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_adbcca06-2b17-4e61-bf9a-7b9ac833d6e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_e3fda506-bf67-4aa8-943d-d7d482fde3a9" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_adbcca06-2b17-4e61-bf9a-7b9ac833d6e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_2da6e57e-bddd-48f1-afa3-c23a6fb37e3f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a6264322-e02e-44fc-8638-93ec17f162cd" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_2da6e57e-bddd-48f1-afa3-c23a6fb37e3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OtherLiabilitiesRelatedToRestrictedInvestments_aafb0c6f-b46a-4963-b92a-5b9eacbd1862" xlink:href="eri-20200930.xsd#eri_OtherLiabilitiesRelatedToRestrictedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_2da6e57e-bddd-48f1-afa3-c23a6fb37e3f" xlink:to="loc_eri_OtherLiabilitiesRelatedToRestrictedInvestments_aafb0c6f-b46a-4963-b92a-5b9eacbd1862" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgesLiabilities_838f04c6-fa3f-450f-b63e-04d24fa944c4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgesLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_2da6e57e-bddd-48f1-afa3-c23a6fb37e3f" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgesLiabilities_838f04c6-fa3f-450f-b63e-04d24fa944c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgeLiabilitiesAtFairValue_e9785ea7-9652-4ca6-a845-86fe33269a78" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueHedgeLiabilitiesAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_2da6e57e-bddd-48f1-afa3-c23a6fb37e3f" xlink:to="loc_us-gaap_FairValueHedgeLiabilitiesAtFairValue_e9785ea7-9652-4ca6-a845-86fe33269a78" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7ef81834-cc54-4871-872b-b9a8bff82d08" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a6264322-e02e-44fc-8638-93ec17f162cd" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7ef81834-cc54-4871-872b-b9a8bff82d08" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b60406c3-c8e7-4f10-8f7e-a4ca827f4700" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7ef81834-cc54-4871-872b-b9a8bff82d08" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b60406c3-c8e7-4f10-8f7e-a4ca827f4700" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_b60406c3-c8e7-4f10-8f7e-a4ca827f4700_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b60406c3-c8e7-4f10-8f7e-a4ca827f4700" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_b60406c3-c8e7-4f10-8f7e-a4ca827f4700_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_29babf82-7055-4d9c-aa4f-737a304f92cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b60406c3-c8e7-4f10-8f7e-a4ca827f4700" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_29babf82-7055-4d9c-aa4f-737a304f92cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_3515c43c-8aa2-40fa-91ff-73cfe6286b8c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_29babf82-7055-4d9c-aa4f-737a304f92cb" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_3515c43c-8aa2-40fa-91ff-73cfe6286b8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7ef81834-cc54-4871-872b-b9a8bff82d08" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_52bbbea3-fa28-4567-894e-80998e191852" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c2f17bfe-a034-4a3e-acd9-87ebfdf5326b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_52bbbea3-fa28-4567-894e-80998e191852" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_27e738b0-fb8a-4b2a-844e-655522db0334" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_52bbbea3-fa28-4567-894e-80998e191852" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_27e738b0-fb8a-4b2a-844e-655522db0334" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_65a97583-3294-4342-b01d-a647e18bdcd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_52bbbea3-fa28-4567-894e-80998e191852" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_65a97583-3294-4342-b01d-a647e18bdcd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_fb355f6e-1b89-4d48-9fbd-7a9c37a05c33" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_52bbbea3-fa28-4567-894e-80998e191852" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_fb355f6e-1b89-4d48-9fbd-7a9c37a05c33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_13fb0ebb-f386-48f2-9d8c-c5bf211182ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7ef81834-cc54-4871-872b-b9a8bff82d08" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_13fb0ebb-f386-48f2-9d8c-c5bf211182ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_13fb0ebb-f386-48f2-9d8c-c5bf211182ff_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_13fb0ebb-f386-48f2-9d8c-c5bf211182ff" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_13fb0ebb-f386-48f2-9d8c-c5bf211182ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_5497552b-5c05-458c-a1c1-5f9a58af7978" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_13fb0ebb-f386-48f2-9d8c-c5bf211182ff" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_5497552b-5c05-458c-a1c1-5f9a58af7978" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_A5ConvertibleNotesMember_185532b5-6926-43a3-82e4-8a396a756926" xlink:href="eri-20200930.xsd#eri_A5ConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_5497552b-5c05-458c-a1c1-5f9a58af7978" xlink:to="loc_eri_A5ConvertibleNotesMember_185532b5-6926-43a3-82e4-8a396a756926" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapsAndFXForwardMember_fdc8fa71-3239-4272-9b02-9c410e1e38b7" xlink:href="eri-20200930.xsd#eri_InterestRateSwapsAndFXForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_5497552b-5c05-458c-a1c1-5f9a58af7978" xlink:to="loc_eri_InterestRateSwapsAndFXForwardMember_fdc8fa71-3239-4272-9b02-9c410e1e38b7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofChangeinRestrictedInvestmentsValuedUsingLevel3InputsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsScheduleofChangeinRestrictedInvestmentsValuedUsingLevel3InputsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofChangeinRestrictedInvestmentsValuedUsingLevel3InputsDetails" xlink:type="extended" id="i124fbd65e3164893842e25342388a8a8_FairValueMeasurementsScheduleofChangeinRestrictedInvestmentsValuedUsingLevel3InputsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_18451a6a-4e18-49c6-8781-c4391c2571cf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_18451a6a-4e18-49c6-8781-c4391c2571cf" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestments_22943793-f3d4-4abd-9f6b-c4ee1481a8bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:to="loc_us-gaap_RestrictedCashAndInvestments_22943793-f3d4-4abd-9f6b-c4ee1481a8bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OtherLiabilitiesRelatedToRestrictedInvestments_c249ecae-8d9c-4af5-8a47-cfacab8ef1c1" xlink:href="eri-20200930.xsd#eri_OtherLiabilitiesRelatedToRestrictedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:to="loc_eri_OtherLiabilitiesRelatedToRestrictedInvestments_c249ecae-8d9c-4af5-8a47-cfacab8ef1c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_e3a8972a-6b66-43c1-8d9d-2c3e086d43dd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_e3a8972a-6b66-43c1-8d9d-2c3e086d43dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_2f176658-6f16-4997-8268-a87b2969cfae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_e4c52a80-b874-4e51-800b-616f70b8da69" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_2f176658-6f16-4997-8268-a87b2969cfae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OtherLiabilitiesRelatedToRestrictedInvestments_359cc3b6-a7a4-4d9c-9aac-2f2d81dc0776" xlink:href="eri-20200930.xsd#eri_OtherLiabilitiesRelatedToRestrictedInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestments_165bd825-171d-4206-9f83-649400a930fa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_18451a6a-4e18-49c6-8781-c4391c2571cf" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5bbe4a3c-16d8-4920-a2ee-ec50cf652623" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_0ab2a61d-23e3-4268-a0cd-fe5f3eb8d32f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5bbe4a3c-16d8-4920-a2ee-ec50cf652623" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RestrictedCashAndInvestmentsMember_dbb5d418-0a56-4afe-b0c0-5fa01b5d69c0" xlink:href="eri-20200930.xsd#eri_RestrictedCashAndInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5bbe4a3c-16d8-4920-a2ee-ec50cf652623" xlink:to="loc_eri_RestrictedCashAndInvestmentsMember_dbb5d418-0a56-4afe-b0c0-5fa01b5d69c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_763640fd-f830-47f1-b7ed-b18fdb194ac9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_763640fd-f830-47f1-b7ed-b18fdb194ac9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_763640fd-f830-47f1-b7ed-b18fdb194ac9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_763640fd-f830-47f1-b7ed-b18fdb194ac9" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_763640fd-f830-47f1-b7ed-b18fdb194ac9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_7d426a9c-adf0-4e44-ab97-30c700adf9d8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_763640fd-f830-47f1-b7ed-b18fdb194ac9" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_7d426a9c-adf0-4e44-ab97-30c700adf9d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesMember_e2a791f7-a6d0-4ff2-ae40-22cac0c50cd9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_7d426a9c-adf0-4e44-ab97-30c700adf9d8" xlink:to="loc_us-gaap_OtherLiabilitiesMember_e2a791f7-a6d0-4ff2-ae40-22cac0c50cd9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a9079218-96a2-4378-b8cf-2cf909a0946e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a9079218-96a2-4378-b8cf-2cf909a0946e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a9079218-96a2-4378-b8cf-2cf909a0946e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a9079218-96a2-4378-b8cf-2cf909a0946e" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a9079218-96a2-4378-b8cf-2cf909a0946e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_86ae5660-ec8a-4b8b-8ec6-e20a8b6c9e61" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a9079218-96a2-4378-b8cf-2cf909a0946e" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_86ae5660-ec8a-4b8b-8ec6-e20a8b6c9e61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_f71605a8-15c4-42d1-8c90-bd72739d395e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_86ae5660-ec8a-4b8b-8ec6-e20a8b6c9e61" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_f71605a8-15c4-42d1-8c90-bd72739d395e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_180d53d8-9561-4620-8190-d4c39d643cc4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c45be8f3-1ce7-4b5b-baf9-683c5af5a1ed" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_180d53d8-9561-4620-8190-d4c39d643cc4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_180d53d8-9561-4620-8190-d4c39d643cc4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_180d53d8-9561-4620-8190-d4c39d643cc4" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_180d53d8-9561-4620-8190-d4c39d643cc4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_5eea1c2d-34a8-48da-b208-c7f37ee30abe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_180d53d8-9561-4620-8190-d4c39d643cc4" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_5eea1c2d-34a8-48da-b208-c7f37ee30abe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_e421354b-42d2-4fc8-9311-e8d9782cfe7a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_5eea1c2d-34a8-48da-b208-c7f37ee30abe" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_e421354b-42d2-4fc8-9311-e8d9782cfe7a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="extended" id="if6bcb2d4aa574dd188052412bcd37395_FairValueMeasurementsAdditionalInformationDetails"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsRestrictedInvestmentsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsRestrictedInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsRestrictedInvestmentsDetails" xlink:type="extended" id="i410155b066644d1bb9cd609ac124bf64_FairValueMeasurementsRestrictedInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AgreementPeriod_332a2b3c-d003-47b7-9167-d952e9af0889" xlink:href="eri-20200930.xsd#eri_AgreementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_eri_AgreementPeriod_332a2b3c-d003-47b7-9167-d952e9af0889" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfCommonSharesReceivedUnderAgreement_3392f713-3a45-4a52-ab04-f757bb59c75c" xlink:href="eri-20200930.xsd#eri_NumberOfCommonSharesReceivedUnderAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_eri_NumberOfCommonSharesReceivedUnderAgreement_3392f713-3a45-4a52-ab04-f757bb59c75c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CommonStockSalesRestrictionPeriodUponExerciseOfFirstOption_2b00f985-7c13-4c3b-a9b8-9226c2e86771" xlink:href="eri-20200930.xsd#eri_CommonStockSalesRestrictionPeriodUponExerciseOfFirstOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_eri_CommonStockSalesRestrictionPeriodUponExerciseOfFirstOption_2b00f985-7c13-4c3b-a9b8-9226c2e86771" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_80680465-0a15-41a0-974e-ef710d4ef4f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_80680465-0a15-41a0-974e-ef710d4ef4f3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_6da6c737-36fb-4275-86d1-5cc29c34acc8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_6da6c737-36fb-4275-86d1-5cc29c34acc8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2408d3a8-d1e9-4e8e-ad35-948aa161d19f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_af19c974-7596-4cb4-966d-5755d823d871" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2408d3a8-d1e9-4e8e-ad35-948aa161d19f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2408d3a8-d1e9-4e8e-ad35-948aa161d19f" xlink:to="loc_srt_CounterpartyNameAxis_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1c41d715-6324-41f9-a227-37f7a7a1fd2b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_7492aa68-8f58-43bd-87bd-b1f37dfbfa7e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1c41d715-6324-41f9-a227-37f7a7a1fd2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_TheStarsGroupIncorporationMember_3f6c0905-ab5f-40cb-a0fc-9edd399ad9a7" xlink:href="eri-20200930.xsd#eri_TheStarsGroupIncorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1c41d715-6324-41f9-a227-37f7a7a1fd2b" xlink:to="loc_eri_TheStarsGroupIncorporationMember_3f6c0905-ab5f-40cb-a0fc-9edd399ad9a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_3413adc5-84fd-45ba-a495-6ee0bb5d7981" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2408d3a8-d1e9-4e8e-ad35-948aa161d19f" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_3413adc5-84fd-45ba-a495-6ee0bb5d7981" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_3413adc5-84fd-45ba-a495-6ee0bb5d7981_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_3413adc5-84fd-45ba-a495-6ee0bb5d7981" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_3413adc5-84fd-45ba-a495-6ee0bb5d7981_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_c2541bf6-4e72-4983-af2c-6268919819a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_3413adc5-84fd-45ba-a495-6ee0bb5d7981" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_c2541bf6-4e72-4983-af2c-6268919819a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_MarketableSecuritiesMember_b8ee73e7-2c03-42d1-be4e-e8fe4ddbfc94" xlink:href="eri-20200930.xsd#eri_MarketableSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_c2541bf6-4e72-4983-af2c-6268919819a5" xlink:to="loc_eri_MarketableSecuritiesMember_b8ee73e7-2c03-42d1-be4e-e8fe4ddbfc94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RestrictedCashAndInvestmentsMember_bb831fcd-0a3e-4d24-bd5d-6f110b7e481d" xlink:href="eri-20200930.xsd#eri_RestrictedCashAndInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_c2541bf6-4e72-4983-af2c-6268919819a5" xlink:to="loc_eri_RestrictedCashAndInvestmentsMember_bb831fcd-0a3e-4d24-bd5d-6f110b7e481d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsDerivativeInstrumentsDetails" xlink:type="extended" id="i93c2cefcffa847429c4f2fe1b83c7431_FairValueMeasurementsDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0c20de9b-30d9-4391-b2b0-8bb15ea92c0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0c20de9b-30d9-4391-b2b0-8bb15ea92c0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_1a5e7557-65e4-4863-8de0-83070d80ffbd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_CommonStockSharesIssued_1a5e7557-65e4-4863-8de0-83070d80ffbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_6ba2e133-2b25-45af-9d71-3bcbd5362119" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_6ba2e133-2b25-45af-9d71-3bcbd5362119" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_ee8553b1-78c0-492a-a66a-afe23d6f8e6a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_ee8553b1-78c0-492a-a66a-afe23d6f8e6a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_9eb8c454-e8df-4eb0-ab3b-8116ce6bc024" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_9eb8c454-e8df-4eb0-ab3b-8116ce6bc024" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_087c0234-e911-456d-a3b6-eca26baee78f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_087c0234-e911-456d-a3b6-eca26baee78f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_97e2b7c1-4f74-4bfe-85c1-d58c8c598c0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_97e2b7c1-4f74-4bfe-85c1-d58c8c598c0b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_7ed4d33e-d15c-4eac-b62c-8c3a897cbb7e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_7ed4d33e-d15c-4eac-b62c-8c3a897cbb7e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_OtherIncomeLoss_ef986288-082d-4d0f-b8ad-40fdc8c89cfc" xlink:href="eri-20200930.xsd#eri_OtherIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_eri_OtherIncomeLoss_ef986288-082d-4d0f-b8ad-40fdc8c89cfc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebt_900c6ca4-9234-4050-bf07-6a525dc67067" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_ConvertibleDebt_900c6ca4-9234-4050-bf07-6a525dc67067" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockHeldInTrust_c897e3d8-965e-4dae-b7cf-5b9e804161eb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockHeldInTrust"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_CommonStockHeldInTrust_c897e3d8-965e-4dae-b7cf-5b9e804161eb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockAmountConverted1_5e96eaaa-5411-4890-b0b3-18ce4184df58" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockAmountConverted1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_ConversionOfStockAmountConverted1_5e96eaaa-5411-4890-b0b3-18ce4184df58" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_76db33ea-1c12-4bf4-9ef8-b58129050b5d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentTerm_76db33ea-1c12-4bf4-9ef8-b58129050b5d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_2652cbd9-a1f5-4d76-9e23-f449d85cb62a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_2652cbd9-a1f5-4d76-9e23-f449d85cb62a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_8d29e1d5-cf0b-4def-a972-953c74796584" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_8d29e1d5-cf0b-4def-a972-953c74796584" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_213fe672-5328-4b68-affe-84e748548aa5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DerivativeNotionalAmount_213fe672-5328-4b68-affe-84e748548aa5" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_4557a88e-5698-4b4f-ab70-53990590e31f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_4557a88e-5698-4b4f-ab70-53990590e31f" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_0e4590bc-31be-4eb6-ad9c-73ba47901388" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_DerivativeLiabilities_0e4590bc-31be-4eb6-ad9c-73ba47901388" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfInterestRateDerivativesHeld_cbf7c255-f169-4e8b-bfaa-3bbc12dd6236" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfInterestRateDerivativesHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_NumberOfInterestRateDerivativesHeld_cbf7c255-f169-4e8b-bfaa-3bbc12dd6236" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_9bdbd8a0-33e2-4315-b1d8-fc9680c56a91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_9bdbd8a0-33e2-4315-b1d8-fc9680c56a91" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_e0676b41-812a-4ddb-adda-76a89cf3025e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_e0676b41-812a-4ddb-adda-76a89cf3025e" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_4e2f4346-30e9-448e-ac67-9d1f6f36b95e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_4e2f4346-30e9-448e-ac67-9d1f6f36b95e" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0d9738-f2d9-40d1-82df-35efbbc01030" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_819d882a-a75a-4fe8-a4bb-22b6ba5df588" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_DebtInstrumentAxis_819d882a-a75a-4fe8-a4bb-22b6ba5df588" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_819d882a-a75a-4fe8-a4bb-22b6ba5df588_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_819d882a-a75a-4fe8-a4bb-22b6ba5df588" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_819d882a-a75a-4fe8-a4bb-22b6ba5df588_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_712a73cd-7e9b-4396-805e-d6d968227f8c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_819d882a-a75a-4fe8-a4bb-22b6ba5df588" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_712a73cd-7e9b-4396-805e-d6d968227f8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_FormerCaesars5ConvertibleNotesMember_97657ffd-cd75-412b-b36b-114345aad4b6" xlink:href="eri-20200930.xsd#eri_FormerCaesars5ConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_712a73cd-7e9b-4396-805e-d6d968227f8c" xlink:to="loc_eri_FormerCaesars5ConvertibleNotesMember_97657ffd-cd75-412b-b36b-114345aad4b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_c551bc81-eea1-4bcc-9f67-2b730ee75c66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_c551bc81-eea1-4bcc-9f67-2b730ee75c66" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c551bc81-eea1-4bcc-9f67-2b730ee75c66_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c551bc81-eea1-4bcc-9f67-2b730ee75c66" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c551bc81-eea1-4bcc-9f67-2b730ee75c66_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8d100ed3-3f28-4181-b421-90b6c6b56c1a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c551bc81-eea1-4bcc-9f67-2b730ee75c66" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8d100ed3-3f28-4181-b421-90b6c6b56c1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_37a41f53-67c8-40c5-8b2f-0eb5a83666ad" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8d100ed3-3f28-4181-b421-90b6c6b56c1a" xlink:to="loc_us-gaap_SeniorNotesMember_37a41f53-67c8-40c5-8b2f-0eb5a83666ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_159108f0-dfff-4d52-9f01-ebeaabd6ce6a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_159108f0-dfff-4d52-9f01-ebeaabd6ce6a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_159108f0-dfff-4d52-9f01-ebeaabd6ce6a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_159108f0-dfff-4d52-9f01-ebeaabd6ce6a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_159108f0-dfff-4d52-9f01-ebeaabd6ce6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_9a2d3c7a-200c-43ce-ba95-ba16c6e1b88d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_159108f0-dfff-4d52-9f01-ebeaabd6ce6a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_9a2d3c7a-200c-43ce-ba95-ba16c6e1b88d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_42442df7-2a76-4b09-89a7-32e32f6447f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_9a2d3c7a-200c-43ce-ba95-ba16c6e1b88d" xlink:to="loc_us-gaap_ForeignExchangeContractMember_42442df7-2a76-4b09-89a7-32e32f6447f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CRCCreditAgreementMember_06e6e6aa-dab3-4912-94e2-a92b37312ff1" xlink:href="eri-20200930.xsd#eri_CRCCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_9a2d3c7a-200c-43ce-ba95-ba16c6e1b88d" xlink:to="loc_eri_CRCCreditAgreementMember_06e6e6aa-dab3-4912-94e2-a92b37312ff1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_ec6f6a38-92b7-4ee7-b306-b8c035323dfd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_9a2d3c7a-200c-43ce-ba95-ba16c6e1b88d" xlink:to="loc_us-gaap_InterestRateSwapMember_ec6f6a38-92b7-4ee7-b306-b8c035323dfd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_02d48ff1-cf50-4fda-973d-d5901d83ada3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_HedgingDesignationAxis_02d48ff1-cf50-4fda-973d-d5901d83ada3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_02d48ff1-cf50-4fda-973d-d5901d83ada3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_02d48ff1-cf50-4fda-973d-d5901d83ada3" xlink:to="loc_us-gaap_HedgingDesignationDomain_02d48ff1-cf50-4fda-973d-d5901d83ada3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_659c4671-db66-4dd6-935c-73ff9daa2cbc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_02d48ff1-cf50-4fda-973d-d5901d83ada3" xlink:to="loc_us-gaap_HedgingDesignationDomain_659c4671-db66-4dd6-935c-73ff9daa2cbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_0c88f215-e69e-4fe1-99bd-d4d2615153d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_659c4671-db66-4dd6-935c-73ff9daa2cbc" xlink:to="loc_us-gaap_NondesignatedMember_0c88f215-e69e-4fe1-99bd-d4d2615153d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_4353a650-f50d-4ccf-b89c-28ca9e5a27ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_4353a650-f50d-4ccf-b89c-28ca9e5a27ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_4353a650-f50d-4ccf-b89c-28ca9e5a27ff_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_4353a650-f50d-4ccf-b89c-28ca9e5a27ff" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_4353a650-f50d-4ccf-b89c-28ca9e5a27ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_eed837bf-67f7-4fa7-a315-af88ed10cabe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_4353a650-f50d-4ccf-b89c-28ca9e5a27ff" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_eed837bf-67f7-4fa7-a315-af88ed10cabe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_d9fcbd06-338d-4608-b472-2aac27b1383d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_eed837bf-67f7-4fa7-a315-af88ed10cabe" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_d9fcbd06-338d-4608-b472-2aac27b1383d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_6c17a535-c4b7-46ef-a0c6-24d07560ffbf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_6c17a535-c4b7-46ef-a0c6-24d07560ffbf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_6c17a535-c4b7-46ef-a0c6-24d07560ffbf_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6c17a535-c4b7-46ef-a0c6-24d07560ffbf" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6c17a535-c4b7-46ef-a0c6-24d07560ffbf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_851ab1cb-fcc4-4f69-97e7-1a942d7569f9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6c17a535-c4b7-46ef-a0c6-24d07560ffbf" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_851ab1cb-fcc4-4f69-97e7-1a942d7569f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_152d4d80-46dc-4fae-b815-29e6b2ccced5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_851ab1cb-fcc4-4f69-97e7-1a942d7569f9" xlink:to="loc_us-gaap_SubsequentEventMember_152d4d80-46dc-4fae-b815-29e6b2ccced5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5753eb78-ea8d-490a-832a-9e4e2e7bdc44" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2c78f258-be07-4e84-945d-04eace754bf4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_ac33ed88-6e6c-48b6-8b21-b1e1c2b9dae0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2c78f258-be07-4e84-945d-04eace754bf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_1c25bbdc-50e3-40d3-8cf5-1bc91045bf0e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2c78f258-be07-4e84-945d-04eace754bf4" xlink:to="loc_us-gaap_InterestExpenseMember_1c25bbdc-50e3-40d3-8cf5-1bc91045bf0e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsScheduleofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofDerivativeInstrumentsDetails" xlink:type="extended" id="ia44b2dc7e0f24c5b85c914ea634b32e9_FairValueMeasurementsScheduleofDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f7665815-7b71-4405-b75d-ffcc52a996ca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_d99f0e4b-94e7-447e-b085-90e4697f91de" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f7665815-7b71-4405-b75d-ffcc52a996ca" xlink:to="loc_us-gaap_DerivativeNotionalAmount_d99f0e4b-94e7-447e-b085-90e4697f91de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_410dd15c-a149-4114-b1a8-1f7e724487b9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f7665815-7b71-4405-b75d-ffcc52a996ca" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_410dd15c-a149-4114-b1a8-1f7e724487b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeVariableInterestRate_f7fbad4c-1517-4aa1-9ceb-07a05f72445a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeVariableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f7665815-7b71-4405-b75d-ffcc52a996ca" xlink:to="loc_us-gaap_DerivativeVariableInterestRate_f7fbad4c-1517-4aa1-9ceb-07a05f72445a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_98c9bf41-f062-4caa-bc94-8d5e49cab613" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f7665815-7b71-4405-b75d-ffcc52a996ca" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_98c9bf41-f062-4caa-bc94-8d5e49cab613" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_392fc76f-2860-4b71-8736-7225d577de09" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_98c9bf41-f062-4caa-bc94-8d5e49cab613" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_392fc76f-2860-4b71-8736-7225d577de09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_392fc76f-2860-4b71-8736-7225d577de09_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_392fc76f-2860-4b71-8736-7225d577de09" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_392fc76f-2860-4b71-8736-7225d577de09_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_e3ca007a-4ab2-4fdd-a9a6-a47b3da3d343" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_392fc76f-2860-4b71-8736-7225d577de09" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_e3ca007a-4ab2-4fdd-a9a6-a47b3da3d343" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_9ca6e38e-cb06-4de9-abe4-405fd415c13c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_e3ca007a-4ab2-4fdd-a9a6-a47b3da3d343" xlink:to="loc_us-gaap_InterestRateSwapMember_9ca6e38e-cb06-4de9-abe4-405fd415c13c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DerivativePeriodAxis_08f20494-0b1d-409b-8e4a-1de4a6982270" xlink:href="eri-20200930.xsd#eri_DerivativePeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_98c9bf41-f062-4caa-bc94-8d5e49cab613" xlink:to="loc_eri_DerivativePeriodAxis_08f20494-0b1d-409b-8e4a-1de4a6982270" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DerivativePeriodDomainDomain_08f20494-0b1d-409b-8e4a-1de4a6982270_default" xlink:href="eri-20200930.xsd#eri_DerivativePeriodDomainDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eri_DerivativePeriodAxis_08f20494-0b1d-409b-8e4a-1de4a6982270" xlink:to="loc_eri_DerivativePeriodDomainDomain_08f20494-0b1d-409b-8e4a-1de4a6982270_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:href="eri-20200930.xsd#eri_DerivativePeriodDomainDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eri_DerivativePeriodAxis_08f20494-0b1d-409b-8e4a-1de4a6982270" xlink:to="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period1Member_c29af236-bdb7-4668-a864-acac4d22472a" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period1Member_c29af236-bdb7-4668-a864-acac4d22472a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period2Member_576ed3f8-e0d7-45d9-a19d-ef02f1f28556" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period2Member_576ed3f8-e0d7-45d9-a19d-ef02f1f28556" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period3Member_90beae20-41ad-42e0-a735-033cf828d063" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveDec312018MaturingDec312022Period3Member_90beae20-41ad-42e0-a735-033cf828d063" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312020Member_f9cfba35-eeac-40e7-943f-3277376f26cf" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan12019MaturingDec312020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312020Member_f9cfba35-eeac-40e7-943f-3277376f26cf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period1Member_c15352f0-e2df-40fa-957d-691b0718dd94" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period1Member_c15352f0-e2df-40fa-957d-691b0718dd94" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period2Member_1cfcc794-5ebc-4891-860f-a1675fb25010" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312021Period2Member_1cfcc794-5ebc-4891-860f-a1675fb25010" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312022Member_57d8fe02-f1c1-4059-925a-42e7c9555aa7" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan12019MaturingDec312022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan12019MaturingDec312022Member_57d8fe02-f1c1-4059-925a-42e7c9555aa7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period1Member_cd89c506-b4ad-4a13-b0e4-b53cc661f4c2" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period1Member_cd89c506-b4ad-4a13-b0e4-b53cc661f4c2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period2Member_38caa5f2-ea89-4874-a569-68878745c816" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312020Period2Member_38caa5f2-ea89-4874-a569-68878745c816" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312021Member_ab1d910c-086c-4c5a-b13d-d78ea667e4a7" xlink:href="eri-20200930.xsd#eri_InterestRateSwapEffectiveJan22019MaturingDec312021Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_DerivativePeriodDomainDomain_6261e701-7146-49cb-adcd-0fd0e2f256ed" xlink:to="loc_eri_InterestRateSwapEffectiveJan22019MaturingDec312021Member_ab1d910c-086c-4c5a-b13d-d78ea667e4a7" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#FairValueMeasurementsScheduleofAccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/FairValueMeasurementsScheduleofAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended" id="i20f2a96951734a339aac99c1f40b2798_FairValueMeasurementsScheduleofAccumulatedOtherComprehensiveIncomeLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9d6a3e6-97c8-499b-b34a-798d1b0f541c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9d6a3e6-97c8-499b-b34a-798d1b0f541c" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_d75199cf-b31d-487b-bd55-c5d938adc13c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_d75199cf-b31d-487b-bd55-c5d938adc13c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_f8655bfc-0c4e-407a-b4cd-baca9e51fcf1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_f8655bfc-0c4e-407a-b4cd-baca9e51fcf1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_b0d76dd2-c5fb-4537-93e8-cb6516a2aeaa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_b0d76dd2-c5fb-4537-93e8-cb6516a2aeaa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_835bfeff-e657-43a0-97bd-fc57d13be053" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_158c9e84-0ba0-4b41-8243-2d4c51c0cc0b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_835bfeff-e657-43a0-97bd-fc57d13be053" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8c02aade-f5fc-4e53-99a6-003c09da83c6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2acf798a-9986-4f01-885c-32b6949a1fb5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9d6a3e6-97c8-499b-b34a-798d1b0f541c" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2acf798a-9986-4f01-885c-32b6949a1fb5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_92794522-353c-4fa4-b670-1064cbb5cf34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_2acf798a-9986-4f01-885c-32b6949a1fb5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_92794522-353c-4fa4-b670-1064cbb5cf34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_92794522-353c-4fa4-b670-1064cbb5cf34_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_92794522-353c-4fa4-b670-1064cbb5cf34" xlink:to="loc_us-gaap_EquityComponentDomain_92794522-353c-4fa4-b670-1064cbb5cf34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f2d803f6-88a3-42a8-b9da-674d7d332cc3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_92794522-353c-4fa4-b670-1064cbb5cf34" xlink:to="loc_us-gaap_EquityComponentDomain_f2d803f6-88a3-42a8-b9da-674d7d332cc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember_290b0774-5592-446e-a80a-fda291d48420" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f2d803f6-88a3-42a8-b9da-674d7d332cc3" xlink:to="loc_us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember_290b0774-5592-446e-a80a-fda291d48420" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_d49e7dc3-b1f1-4db8-a16f-eeabeedb3e13" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f2d803f6-88a3-42a8-b9da-674d7d332cc3" xlink:to="loc_us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_d49e7dc3-b1f1-4db8-a16f-eeabeedb3e13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_b6eb1fed-23db-4859-ad7f-9298e2c88f16" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f2d803f6-88a3-42a8-b9da-674d7d332cc3" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_b6eb1fed-23db-4859-ad7f-9298e2c88f16" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/EarningsperShare" xlink:type="simple" xlink:href="eri-20200930.xsd#EarningsperShare"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/EarningsperShare" xlink:type="extended" id="ie5715d15587b46188fbb740527ae59dc_EarningsperShare"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/EarningsperShareTables" xlink:type="simple" xlink:href="eri-20200930.xsd#EarningsperShareTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/EarningsperShareTables" xlink:type="extended" id="id2bfca359568434683fd99e60e01edc4_EarningsperShareTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/EarningsperShareScheduleofReconciliationoftheNumeratorsandDenominatorsoftheBasicandDilutedNetIncomePerShareComputationsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#EarningsperShareScheduleofReconciliationoftheNumeratorsandDenominatorsoftheBasicandDilutedNetIncomePerShareComputationsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/EarningsperShareScheduleofReconciliationoftheNumeratorsandDenominatorsoftheBasicandDilutedNetIncomePerShareComputationsDetails" xlink:type="extended" id="i019cd4a06e6a41f3a8a065974540d540_EarningsperShareScheduleofReconciliationoftheNumeratorsandDenominatorsoftheBasicandDilutedNetIncomePerShareComputationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_3b922f91-6a38-4a21-89f6-f0993c829ce7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:to="loc_us-gaap_NetIncomeLoss_3b922f91-6a38-4a21-89f6-f0993c829ce7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_401379b1-8e69-4c2b-986b-fac04ccde136" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_401379b1-8e69-4c2b-986b-fac04ccde136" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_4839daed-05b6-4aca-bcd7-1c7079591d4b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_401379b1-8e69-4c2b-986b-fac04ccde136" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_4839daed-05b6-4aca-bcd7-1c7079591d4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_a8f653c7-f196-4da9-b2f0-10c3ff9300ae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_401379b1-8e69-4c2b-986b-fac04ccde136" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_a8f653c7-f196-4da9-b2f0-10c3ff9300ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_dd6dea89-df5b-42e0-9cf3-0d2ec6b92321" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_401379b1-8e69-4c2b-986b-fac04ccde136" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_dd6dea89-df5b-42e0-9cf3-0d2ec6b92321" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_f408131d-0466-4102-aac0-d7f7753f059a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_f408131d-0466-4102-aac0-d7f7753f059a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_a985b0ad-c0f1-44a7-9137-ac1e4b147d8e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_f408131d-0466-4102-aac0-d7f7753f059a" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_a985b0ad-c0f1-44a7-9137-ac1e4b147d8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_e7218c09-096f-4ca5-ae58-efc254ece8b0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_f408131d-0466-4102-aac0-d7f7753f059a" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_e7218c09-096f-4ca5-ae58-efc254ece8b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_526a0d09-da4d-4b66-a8c1-d4b67615069f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_f408131d-0466-4102-aac0-d7f7753f059a" xlink:to="loc_us-gaap_EarningsPerShareBasic_526a0d09-da4d-4b66-a8c1-d4b67615069f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_4ae58657-3cfe-4282-8d80-76706e521b2c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_4ae58657-3cfe-4282-8d80-76706e521b2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_c7f9efbf-33d2-4c7b-ae9c-336cac318496" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_4ae58657-3cfe-4282-8d80-76706e521b2c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_c7f9efbf-33d2-4c7b-ae9c-336cac318496" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_77bac666-c1bf-4d70-80f3-0508772acc8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_4ae58657-3cfe-4282-8d80-76706e521b2c" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_77bac666-c1bf-4d70-80f3-0508772acc8a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_4c70d059-c3ae-4f42-9852-0535155f1517" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_4ae58657-3cfe-4282-8d80-76706e521b2c" xlink:to="loc_us-gaap_EarningsPerShareDiluted_4c70d059-c3ae-4f42-9852-0535155f1517" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_4644863e-31f7-4261-9de3-b4170a76c084" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_5a58f745-3812-4a22-8159-e37a6c8092c1" xlink:to="loc_us-gaap_StatementTable_4644863e-31f7-4261-9de3-b4170a76c084" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_ed8d1388-11d3-4116-9f79-772e061dc1ef" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4644863e-31f7-4261-9de3-b4170a76c084" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_ed8d1388-11d3-4116-9f79-772e061dc1ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ed8d1388-11d3-4116-9f79-772e061dc1ef_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_ed8d1388-11d3-4116-9f79-772e061dc1ef" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ed8d1388-11d3-4116-9f79-772e061dc1ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_aa56ef52-b601-4eca-ba7b-e00ee4ffeff9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_ed8d1388-11d3-4116-9f79-772e061dc1ef" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_aa56ef52-b601-4eca-ba7b-e00ee4ffeff9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_4a646702-2736-49e4-8d04-18671040750d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_aa56ef52-b601-4eca-ba7b-e00ee4ffeff9" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_4a646702-2736-49e4-8d04-18671040750d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/EarningsperShareAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#EarningsperShareAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/EarningsperShareAdditionalInformationDetails" xlink:type="extended" id="i9ec8d0fb453c4a6091194ac00f3bd17a_EarningsperShareAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_EarningsPerShareBasicAndDilutedLineItems_ef534228-16e4-45bf-8ff4-3afda8ce8206" xlink:href="eri-20200930.xsd#eri_EarningsPerShareBasicAndDilutedLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_2dc1830a-49ac-477a-9956-cd298dcc6a13" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedLineItems_ef534228-16e4-45bf-8ff4-3afda8ce8206" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_2dc1830a-49ac-477a-9956-cd298dcc6a13" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EarningsPerShareBasicAndDilutedTable_1291fbff-5914-400b-83e2-2e55b6af8888" xlink:href="eri-20200930.xsd#eri_EarningsPerShareBasicAndDilutedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedLineItems_ef534228-16e4-45bf-8ff4-3afda8ce8206" xlink:to="loc_eri_EarningsPerShareBasicAndDilutedTable_1291fbff-5914-400b-83e2-2e55b6af8888" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_28d28aaf-c24c-4f48-a04a-d164c39450c9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedTable_1291fbff-5914-400b-83e2-2e55b6af8888" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_28d28aaf-c24c-4f48-a04a-d164c39450c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_28d28aaf-c24c-4f48-a04a-d164c39450c9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_28d28aaf-c24c-4f48-a04a-d164c39450c9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_28d28aaf-c24c-4f48-a04a-d164c39450c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6beb0b38-ce3a-4e40-bd78-2e48600d1ab1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_28d28aaf-c24c-4f48-a04a-d164c39450c9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6beb0b38-ce3a-4e40-bd78-2e48600d1ab1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_dbfba0c4-6e8f-48ee-b83c-e991f861b4bc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6beb0b38-ce3a-4e40-bd78-2e48600d1ab1" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_dbfba0c4-6e8f-48ee-b83c-e991f861b4bc" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/EarningsperShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#EarningsperShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/EarningsperShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="extended" id="ic76bb24a69e640229e9ff06a26d35469_EarningsperShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails">
    <link:loc xlink:type="locator" xlink:label="loc_eri_EarningsPerShareBasicAndDilutedLineItems_71db5c1b-469d-4884-b4d8-ac479fcd21c0" xlink:href="eri-20200930.xsd#eri_EarningsPerShareBasicAndDilutedLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_d4ef94d9-ce4c-4a22-b8f4-a0c99f8ef3cf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedLineItems_71db5c1b-469d-4884-b4d8-ac479fcd21c0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_d4ef94d9-ce4c-4a22-b8f4-a0c99f8ef3cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_EarningsPerShareBasicAndDilutedTable_db4569bc-0862-482b-93d0-b1c3168ab677" xlink:href="eri-20200930.xsd#eri_EarningsPerShareBasicAndDilutedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedLineItems_71db5c1b-469d-4884-b4d8-ac479fcd21c0" xlink:to="loc_eri_EarningsPerShareBasicAndDilutedTable_db4569bc-0862-482b-93d0-b1c3168ab677" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_18c18cab-b466-487c-8f8d-18fc6261590e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eri_EarningsPerShareBasicAndDilutedTable_db4569bc-0862-482b-93d0-b1c3168ab677" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_18c18cab-b466-487c-8f8d-18fc6261590e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_18c18cab-b466-487c-8f8d-18fc6261590e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_18c18cab-b466-487c-8f8d-18fc6261590e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_18c18cab-b466-487c-8f8d-18fc6261590e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b963f3b-5587-4539-8f60-150541d8dbc3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_18c18cab-b466-487c-8f8d-18fc6261590e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b963f3b-5587-4539-8f60-150541d8dbc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_95fadcb2-2c57-4d9e-a403-3db97d39f2d3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b963f3b-5587-4539-8f60-150541d8dbc3" xlink:to="loc_us-gaap_StockCompensationPlanMember_95fadcb2-2c57-4d9e-a403-3db97d39f2d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_136a21e6-bc1d-4420-9861-247a8c3f1daa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b963f3b-5587-4539-8f60-150541d8dbc3" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_136a21e6-bc1d-4420-9861-247a8c3f1daa" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LitigationCommitmentsandContingencies" xlink:type="simple" xlink:href="eri-20200930.xsd#LitigationCommitmentsandContingencies"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LitigationCommitmentsandContingencies" xlink:type="extended" id="i29026354bf9f4f86b2130f72c2c756b3_LitigationCommitmentsandContingencies"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/LitigationCommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#LitigationCommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/LitigationCommitmentsandContingenciesDetails" xlink:type="extended" id="ida7b1c10550940f7a8ebf29d11b94b31_LitigationCommitmentsandContingenciesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_9a547e19-7d5b-4104-a3da-b22f76173c07" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_9a547e19-7d5b-4104-a3da-b22f76173c07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalLeasesNetInvestmentInSalesTypeLeases_d38fb05f-33a5-4c89-86ac-a227a17e6d28" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalLeasesNetInvestmentInSalesTypeLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_CapitalLeasesNetInvestmentInSalesTypeLeases_d38fb05f-33a5-4c89-86ac-a227a17e6d28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SaleLeasebackTransactionOneTimePayment_628678fb-a1cc-4941-a5d2-64be2879f89a" xlink:href="eri-20200930.xsd#eri_SaleLeasebackTransactionOneTimePayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_eri_SaleLeasebackTransactionOneTimePayment_628678fb-a1cc-4941-a5d2-64be2879f89a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionAnnualRentalPayments_fcd1f337-85ff-4dc4-951e-fed32512c0c4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleLeasebackTransactionAnnualRentalPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_SaleLeasebackTransactionAnnualRentalPayments_fcd1f337-85ff-4dc4-951e-fed32512c0c4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SaleLeasebackTransactionAnnualLicensePayment_bce8f927-a82c-429a-a092-bf4fe26e01e8" xlink:href="eri-20200930.xsd#eri_SaleLeasebackTransactionAnnualLicensePayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_eri_SaleLeasebackTransactionAnnualLicensePayment_bce8f927-a82c-429a-a092-bf4fe26e01e8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_06676e9c-cb35-45ef-aa8d-4d7e77d5f05a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_06676e9c-cb35-45ef-aa8d-4d7e77d5f05a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_da10251c-fadd-4183-a48a-f28b370b6736" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingCostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_da10251c-fadd-4183-a48a-f28b370b6736" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireIntangibleAssets_f67a6945-b5c1-4c87-a70a-287893ed0678" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_PaymentsToAcquireIntangibleAssets_f67a6945-b5c1-4c87-a70a-287893ed0678" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedLicenseAgreements_1e259879-2c22-4d68-aa31-afd243904353" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedLicenseAgreements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_IndefiniteLivedLicenseAgreements_1e259879-2c22-4d68-aa31-afd243904353" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserve_bc81a983-395e-4048-8890-520ef7bdc010" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SelfInsuranceReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_SelfInsuranceReserve_bc81a983-395e-4048-8890-520ef7bdc010" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_0b67b9a2-f8f8-478e-9c35-711a2d7cb622" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_EscrowDeposit_0b67b9a2-f8f8-478e-9c35-711a2d7cb622" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AccruedContingentLiabilities_dde4073a-ea6b-41eb-a386-c72c634c211b" xlink:href="eri-20200930.xsd#eri_AccruedContingentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_eri_AccruedContingentLiabilities_dde4073a-ea6b-41eb-a386-c72c634c211b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceSettlementsReceivable_92beef35-e024-4e41-8b31-47ccf2be96ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InsuranceSettlementsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_InsuranceSettlementsReceivable_92beef35-e024-4e41-8b31-47ccf2be96ce" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_52d98ca4-ceb5-4e81-8e5b-2e9dbf8fad48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_52d98ca4-ceb5-4e81-8e5b-2e9dbf8fad48" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfPropertyRepairsAndMaintenance_15261ad9-a814-45eb-84f9-36c5cc16b23b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfPropertyRepairsAndMaintenance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_CostOfPropertyRepairsAndMaintenance_15261ad9-a814-45eb-84f9-36c5cc16b23b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_ab19e156-22ac-4697-a6f1-c107382b3a67" xlink:to="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_bcf1e7fd-a064-4bba-9405-db1382d9836b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:to="loc_srt_LitigationCaseAxis_bcf1e7fd-a064-4bba-9405-db1382d9836b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_bcf1e7fd-a064-4bba-9405-db1382d9836b_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_bcf1e7fd-a064-4bba-9405-db1382d9836b" xlink:to="loc_srt_LitigationCaseTypeDomain_bcf1e7fd-a064-4bba-9405-db1382d9836b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_f73aaba7-71d6-48ff-a6b4-af5f50a8f7d7" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_bcf1e7fd-a064-4bba-9405-db1382d9836b" xlink:to="loc_srt_LitigationCaseTypeDomain_f73aaba7-71d6-48ff-a6b4-af5f50a8f7d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_DeclaratoryReliefFromCentaurHoldingsLLCMember_8127b8c6-3b57-4cd4-8870-279d496d5547" xlink:href="eri-20200930.xsd#eri_DeclaratoryReliefFromCentaurHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_f73aaba7-71d6-48ff-a6b4-af5f50a8f7d7" xlink:to="loc_eri_DeclaratoryReliefFromCentaurHoldingsLLCMember_8127b8c6-3b57-4cd4-8870-279d496d5547" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_7b175af2-7c05-4279-bebf-db5b8c359b4c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:to="loc_us-gaap_LeaseArrangementTypeAxis_7b175af2-7c05-4279-bebf-db5b8c359b4c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_7b175af2-7c05-4279-bebf-db5b8c359b4c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_7b175af2-7c05-4279-bebf-db5b8c359b4c" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_7b175af2-7c05-4279-bebf-db5b8c359b4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseArrangementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_7b175af2-7c05-4279-bebf-db5b8c359b4c" xlink:to="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CasinoOperatingContractAndGroundLeaseForHarrahsNewOrleansMember_65535e38-7337-4a80-b218-edec070688ad" xlink:href="eri-20200930.xsd#eri_CasinoOperatingContractAndGroundLeaseForHarrahsNewOrleansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:to="loc_eri_CasinoOperatingContractAndGroundLeaseForHarrahsNewOrleansMember_65535e38-7337-4a80-b218-edec070688ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NBOCGroundLeaseMember_e5022714-1f5c-427e-9728-b3325945df95" xlink:href="eri-20200930.xsd#eri_NBOCGroundLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:to="loc_eri_NBOCGroundLeaseMember_e5022714-1f5c-427e-9728-b3325945df95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsNewOrleansLeaseMember_8b1e4d4e-77cc-4e6b-bc06-27d2ccdad1c8" xlink:href="eri-20200930.xsd#eri_HarrahsNewOrleansLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:to="loc_eri_HarrahsNewOrleansLeaseMember_8b1e4d4e-77cc-4e6b-bc06-27d2ccdad1c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_SportsSponsorshipAndPartnershipObligationsMember_46780b11-a97e-4eea-8e10-0a5fa1de6e31" xlink:href="eri-20200930.xsd#eri_SportsSponsorshipAndPartnershipObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_a00c44f2-289c-49cb-be86-59d2262b6e02" xlink:to="loc_eri_SportsSponsorshipAndPartnershipObligationsMember_46780b11-a97e-4eea-8e10-0a5fa1de6e31" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb18c30f-f50d-4b60-953e-ee06b0a9ec82" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb18c30f-f50d-4b60-953e-ee06b0a9ec82" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_cb18c30f-f50d-4b60-953e-ee06b0a9ec82_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb18c30f-f50d-4b60-953e-ee06b0a9ec82" xlink:to="loc_us-gaap_RelatedPartyDomain_cb18c30f-f50d-4b60-953e-ee06b0a9ec82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_c769db30-f864-40e2-bdc5-db6a1999017b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb18c30f-f50d-4b60-953e-ee06b0a9ec82" xlink:to="loc_us-gaap_RelatedPartyDomain_c769db30-f864-40e2-bdc5-db6a1999017b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HarrahsNewOrleansMember_d925f3b5-1dfe-4de3-8213-18a32a728568" xlink:href="eri-20200930.xsd#eri_HarrahsNewOrleansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_c769db30-f864-40e2-bdc5-db6a1999017b" xlink:to="loc_eri_HarrahsNewOrleansMember_d925f3b5-1dfe-4de3-8213-18a32a728568" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3e1bea36-d52e-4970-8744-4ff80e901f09" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_6fc03179-361a-450f-86bf-dedbfb398950" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3e1bea36-d52e-4970-8744-4ff80e901f09" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3e1bea36-d52e-4970-8744-4ff80e901f09_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3e1bea36-d52e-4970-8744-4ff80e901f09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3e1bea36-d52e-4970-8744-4ff80e901f09_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ed3537cd-6894-4d62-b7cf-632766768182" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3e1bea36-d52e-4970-8744-4ff80e901f09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ed3537cd-6894-4d62-b7cf-632766768182" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_702dccbd-735b-4a28-9a97-10031092d270" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ed3537cd-6894-4d62-b7cf-632766768182" xlink:to="loc_us-gaap_LicensingAgreementsMember_702dccbd-735b-4a28-9a97-10031092d270" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RelatedAffiliates" xlink:type="simple" xlink:href="eri-20200930.xsd#RelatedAffiliates"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RelatedAffiliates" xlink:type="extended" id="i37de9a3e49bd4d4799745445a7f7f960_RelatedAffiliates"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RelatedPartyDisclosuresTables" xlink:type="simple" xlink:href="eri-20200930.xsd#RelatedPartyDisclosuresTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RelatedPartyDisclosuresTables" xlink:type="extended" id="i5f9d7bde537b40f289266f208067b918_RelatedPartyDisclosuresTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RelatedAffiliatesAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#RelatedAffiliatesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RelatedAffiliatesAdditionalInformationDetails" xlink:type="extended" id="i1c71d00364bc4dd59da3dcd5151b7d32_RelatedAffiliatesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_4b9331f5-d619-4a0c-9155-45db22e68047" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_4b9331f5-d619-4a0c-9155-45db22e68047" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_3e84e361-8d5d-4955-a249-c95fb270578e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_3e84e361-8d5d-4955-a249-c95fb270578e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_a3e36dc6-d6f0-4e40-a7a5-7119fadd40a8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_a3e36dc6-d6f0-4e40-a7a5-7119fadd40a8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AnnualRentPayable_6e9df957-e672-4abd-9276-deecd591054c" xlink:href="eri-20200930.xsd#eri_AnnualRentPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_eri_AnnualRentPayable_6e9df957-e672-4abd-9276-deecd591054c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromRelatedParties_eb0ee97b-ecf1-4361-bbd3-20e12e97cfd6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_DueFromRelatedParties_eb0ee97b-ecf1-4361-bbd3-20e12e97cfd6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_cd0e61c8-b951-4620-b876-4db4be6941ea" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_cd0e61c8-b951-4620-b876-4db4be6941ea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromAffiliateCurrent_75110f34-6c5a-42dd-97fd-941cb6c939ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueFromAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_DueFromAffiliateCurrent_75110f34-6c5a-42dd-97fd-941cb6c939ce" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_498ad48c-282f-442f-969c-a7abe64f46a9" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_59c420ee-b73d-44c2-98ad-6f6a8604a798" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:to="loc_srt_OwnershipAxis_59c420ee-b73d-44c2-98ad-6f6a8604a798" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_59c420ee-b73d-44c2-98ad-6f6a8604a798_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_59c420ee-b73d-44c2-98ad-6f6a8604a798" xlink:to="loc_srt_OwnershipDomain_59c420ee-b73d-44c2-98ad-6f6a8604a798_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_0ac12843-b766-40cd-aa42-54e2c725951e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_59c420ee-b73d-44c2-98ad-6f6a8604a798" xlink:to="loc_srt_OwnershipDomain_0ac12843-b766-40cd-aa42-54e2c725951e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RecreationalEnterprisesIncMember_ce71449e-671a-4446-9309-25befbf5e132" xlink:href="eri-20200930.xsd#eri_RecreationalEnterprisesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_0ac12843-b766-40cd-aa42-54e2c725951e" xlink:to="loc_eri_RecreationalEnterprisesIncMember_ce71449e-671a-4446-9309-25befbf5e132" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_503f83c8-83a2-444f-bc99-4e50afa4f824" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_0ac12843-b766-40cd-aa42-54e2c725951e" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_503f83c8-83a2-444f-bc99-4e50afa4f824" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e119b9d9-5975-4dd8-a536-60b96dd79f19" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e119b9d9-5975-4dd8-a536-60b96dd79f19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e119b9d9-5975-4dd8-a536-60b96dd79f19_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e119b9d9-5975-4dd8-a536-60b96dd79f19" xlink:to="loc_us-gaap_RelatedPartyDomain_e119b9d9-5975-4dd8-a536-60b96dd79f19_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e119b9d9-5975-4dd8-a536-60b96dd79f19" xlink:to="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaranoFamilyMember_1b4db66d-a59d-4dda-96d5-db12f4ecee6b" xlink:href="eri-20200930.xsd#eri_CaranoFamilyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:to="loc_eri_CaranoFamilyMember_1b4db66d-a59d-4dda-96d5-db12f4ecee6b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CSAndYAssociatesMember_e52e83e7-9a41-4144-95bc-4343e56eb132" xlink:href="eri-20200930.xsd#eri_CSAndYAssociatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:to="loc_eri_CSAndYAssociatesMember_e52e83e7-9a41-4144-95bc-4343e56eb132" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeBaltimoreMember_f6d9ba13-533e-456e-b750-3e2954c6704d" xlink:href="eri-20200930.xsd#eri_HorseshoeBaltimoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:to="loc_eri_HorseshoeBaltimoreMember_f6d9ba13-533e-456e-b750-3e2954c6704d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_651cc34a-99b2-4de9-bba1-62b7c751505a" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5d665870-dd87-480c-8c9a-3457ff4cd821" xlink:to="loc_srt_AffiliatedEntityMember_651cc34a-99b2-4de9-bba1-62b7c751505a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_70587d03-2d6b-46af-8872-51f85b14b1d2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_70587d03-2d6b-46af-8872-51f85b14b1d2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_70587d03-2d6b-46af-8872-51f85b14b1d2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_70587d03-2d6b-46af-8872-51f85b14b1d2" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_70587d03-2d6b-46af-8872-51f85b14b1d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_7ddcd4c3-4bd5-4196-9c24-108021e0b0c0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_70587d03-2d6b-46af-8872-51f85b14b1d2" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_7ddcd4c3-4bd5-4196-9c24-108021e0b0c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagementFeesMember_43531c49-084e-4d67-867f-753c1e403a87" xlink:href="eri-20200930.xsd#eri_ManagementFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_7ddcd4c3-4bd5-4196-9c24-108021e0b0c0" xlink:to="loc_eri_ManagementFeesMember_43531c49-084e-4d67-867f-753c1e403a87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AllocatedExpensesMember_6bca4a63-785d-4925-a7f9-0fbd5f57b612" xlink:href="eri-20200930.xsd#eri_AllocatedExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_7ddcd4c3-4bd5-4196-9c24-108021e0b0c0" xlink:to="loc_eri_AllocatedExpensesMember_6bca4a63-785d-4925-a7f9-0fbd5f57b612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_62dbbe47-3314-432f-a181-747df473c2b5" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_b5a5e003-83a7-44c7-aed2-aa2068f6722d" xlink:to="loc_srt_CounterpartyNameAxis_62dbbe47-3314-432f-a181-747df473c2b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_62dbbe47-3314-432f-a181-747df473c2b5_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_62dbbe47-3314-432f-a181-747df473c2b5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_62dbbe47-3314-432f-a181-747df473c2b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_e07758a2-6d24-4518-b78a-1866a8180179" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_62dbbe47-3314-432f-a181-747df473c2b5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_e07758a2-6d24-4518-b78a-1866a8180179" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeBaltimoreMember_f52de007-56b3-4ff5-8648-9439398cfffe" xlink:href="eri-20200930.xsd#eri_HorseshoeBaltimoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_e07758a2-6d24-4518-b78a-1866a8180179" xlink:to="loc_eri_HorseshoeBaltimoreMember_f52de007-56b3-4ff5-8648-9439398cfffe" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/RelatedAffiliatesScheduleofRelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#RelatedAffiliatesScheduleofRelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/RelatedAffiliatesScheduleofRelatedPartyTransactionsDetails" xlink:type="extended" id="i35a8a1bd59c741078b59e78367f7a8ab_RelatedAffiliatesScheduleofRelatedPartyTransactionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_95c919f2-0e7d-49a2-9cb4-d244d8b6c0d2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_a6078dc9-4737-4bcc-9a33-2c587e2fe67e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_95c919f2-0e7d-49a2-9cb4-d244d8b6c0d2" xlink:to="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_a6078dc9-4737-4bcc-9a33-2c587e2fe67e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_69457342-84ab-448b-adc6-cb2e41525127" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_95c919f2-0e7d-49a2-9cb4-d244d8b6c0d2" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_69457342-84ab-448b-adc6-cb2e41525127" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_388e649f-3b43-4375-b2ff-76d8de211202" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_69457342-84ab-448b-adc6-cb2e41525127" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_388e649f-3b43-4375-b2ff-76d8de211202" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_388e649f-3b43-4375-b2ff-76d8de211202_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_388e649f-3b43-4375-b2ff-76d8de211202" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_388e649f-3b43-4375-b2ff-76d8de211202_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_4b695d54-2dad-478c-b0ad-715ce89dbf86" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_388e649f-3b43-4375-b2ff-76d8de211202" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_4b695d54-2dad-478c-b0ad-715ce89dbf86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagementFeesMember_97f00999-a114-417d-bbab-65e3449a8947" xlink:href="eri-20200930.xsd#eri_ManagementFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_4b695d54-2dad-478c-b0ad-715ce89dbf86" xlink:to="loc_eri_ManagementFeesMember_97f00999-a114-417d-bbab-65e3449a8947" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AllocatedExpensesMember_f1df4f3c-f1c6-4954-a8b3-2305be98c859" xlink:href="eri-20200930.xsd#eri_AllocatedExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_4b695d54-2dad-478c-b0ad-715ce89dbf86" xlink:to="loc_eri_AllocatedExpensesMember_f1df4f3c-f1c6-4954-a8b3-2305be98c859" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_fbe6f970-b1e0-441d-8523-cfa7fa065bb7" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_69457342-84ab-448b-adc6-cb2e41525127" xlink:to="loc_srt_CounterpartyNameAxis_fbe6f970-b1e0-441d-8523-cfa7fa065bb7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fbe6f970-b1e0-441d-8523-cfa7fa065bb7_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_fbe6f970-b1e0-441d-8523-cfa7fa065bb7" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fbe6f970-b1e0-441d-8523-cfa7fa065bb7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6820fb9b-7a03-443a-87af-5473e79a0c7d" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_fbe6f970-b1e0-441d-8523-cfa7fa065bb7" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6820fb9b-7a03-443a-87af-5473e79a0c7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeBaltimoreMember_4cb74b7f-c5b7-46a0-947c-83568cf9e629" xlink:href="eri-20200930.xsd#eri_HorseshoeBaltimoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6820fb9b-7a03-443a-87af-5473e79a0c7d" xlink:to="loc_eri_HorseshoeBaltimoreMember_4cb74b7f-c5b7-46a0-947c-83568cf9e629" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a1e72006-81f6-467b-b3ea-6b1441369862" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_69457342-84ab-448b-adc6-cb2e41525127" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a1e72006-81f6-467b-b3ea-6b1441369862" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_a1e72006-81f6-467b-b3ea-6b1441369862_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a1e72006-81f6-467b-b3ea-6b1441369862" xlink:to="loc_us-gaap_RelatedPartyDomain_a1e72006-81f6-467b-b3ea-6b1441369862_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ae9e653c-41b0-4159-9fd6-9ca09b7e5228" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a1e72006-81f6-467b-b3ea-6b1441369862" xlink:to="loc_us-gaap_RelatedPartyDomain_ae9e653c-41b0-4159-9fd6-9ca09b7e5228" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_693b5641-acb1-43e7-b174-929d413f6568" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ae9e653c-41b0-4159-9fd6-9ca09b7e5228" xlink:to="loc_srt_AffiliatedEntityMember_693b5641-acb1-43e7-b174-929d413f6568" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformation" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformation"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformation" xlink:type="extended" id="i9839094898b24634a06ca8208176a930_SegmentInformation"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformationTables"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformationTables" xlink:type="extended" id="i8fb15285781341f681e36c3acf10535f_SegmentInformationTables"/>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformationAdditionalInformationDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformationAdditionalInformationDetails" xlink:type="extended" id="i1051832d458141ccaf6578b1b4d52220_SegmentInformationAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_TotalNumberOfGeographicRegions_1de9995c-b731-452b-a212-0b6c2d0162de" xlink:href="eri-20200930.xsd#eri_TotalNumberOfGeographicRegions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_eri_TotalNumberOfGeographicRegions_1de9995c-b731-452b-a212-0b6c2d0162de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_TotalNumberOfReportableSegments_789bdbb0-5766-4018-a7ba-7ff852384dea" xlink:href="eri-20200930.xsd#eri_TotalNumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_eri_TotalNumberOfReportableSegments_789bdbb0-5766-4018-a7ba-7ff852384dea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfGeographicRegion_e5da1853-6cfa-4160-8e13-a22e8df879bd" xlink:href="eri-20200930.xsd#eri_NumberOfGeographicRegion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_eri_NumberOfGeographicRegion_e5da1853-6cfa-4160-8e13-a22e8df879bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_52176359-4485-42b0-8f26-081220439ab7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_us-gaap_NumberOfReportableSegments_52176359-4485-42b0-8f26-081220439ab7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_20b9f9ea-7492-4b47-a81f-6165749707ab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_20b9f9ea-7492-4b47-a81f-6165749707ab" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_da0b70a3-ea8f-4061-a98e-1aad5952cfc4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_da0b70a3-ea8f-4061-a98e-1aad5952cfc4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_AreaOfRoom_5d781852-95c7-43c4-941a-16e3c712ad28" xlink:href="eri-20200930.xsd#eri_AreaOfRoom"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_eri_AreaOfRoom_5d781852-95c7-43c4-941a-16e3c712ad28" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NumberOfBallrooms_6501690e-d3c8-4cfc-8ec8-aa0d6b7ece0e" xlink:href="eri-20200930.xsd#eri_NumberOfBallrooms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_eri_NumberOfBallrooms_6501690e-d3c8-4cfc-8ec8-aa0d6b7ece0e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_dcfa4cc1-ba63-4567-b176-c878770ec554" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_2f1bda07-b675-4495-907f-5b01bfef4bf0" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:to="loc_srt_OwnershipAxis_2f1bda07-b675-4495-907f-5b01bfef4bf0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_2f1bda07-b675-4495-907f-5b01bfef4bf0_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_2f1bda07-b675-4495-907f-5b01bfef4bf0" xlink:to="loc_srt_OwnershipDomain_2f1bda07-b675-4495-907f-5b01bfef4bf0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_3ad80f61-eb88-4649-b77c-e851e3aec009" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_2f1bda07-b675-4495-907f-5b01bfef4bf0" xlink:to="loc_srt_OwnershipDomain_3ad80f61-eb88-4649-b77c-e851e3aec009" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CaesarsEntertainmentCorporationMember_aceedac9-6143-43e0-804e-c2d9bdfeee85" xlink:href="eri-20200930.xsd#eri_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_3ad80f61-eb88-4649-b77c-e851e3aec009" xlink:to="loc_eri_CaesarsEntertainmentCorporationMember_aceedac9-6143-43e0-804e-c2d9bdfeee85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f4f1828c-6b7d-45d2-a4e3-9272670e035f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f4f1828c-6b7d-45d2-a4e3-9272670e035f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f4f1828c-6b7d-45d2-a4e3-9272670e035f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f4f1828c-6b7d-45d2-a4e3-9272670e035f" xlink:to="loc_us-gaap_RelatedPartyDomain_f4f1828c-6b7d-45d2-a4e3-9272670e035f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_cac3724b-5089-4b32-9aca-09feb85056a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f4f1828c-6b7d-45d2-a4e3-9272670e035f" xlink:to="loc_us-gaap_RelatedPartyDomain_cac3724b-5089-4b32-9aca-09feb85056a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_HorseshoeBaltimoreMember_32464a6e-e51a-416f-b106-cd5c28b8912d" xlink:href="eri-20200930.xsd#eri_HorseshoeBaltimoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_cac3724b-5089-4b32-9aca-09feb85056a5" xlink:to="loc_eri_HorseshoeBaltimoreMember_32464a6e-e51a-416f-b106-cd5c28b8912d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_dfe35286-6068-4a99-b5d1-8411722ce18a" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_dfe35286-6068-4a99-b5d1-8411722ce18a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_dfe35286-6068-4a99-b5d1-8411722ce18a_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_dfe35286-6068-4a99-b5d1-8411722ce18a" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_dfe35286-6068-4a99-b5d1-8411722ce18a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_e8f41ceb-9901-4688-a730-3f420eb2022d" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_dfe35286-6068-4a99-b5d1-8411722ce18a" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_e8f41ceb-9901-4688-a730-3f420eb2022d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ConferenceCenterMember_8a52e64f-daac-470e-b3fc-e13d0cc69487" xlink:href="eri-20200930.xsd#eri_ConferenceCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_e8f41ceb-9901-4688-a730-3f420eb2022d" xlink:to="loc_eri_ConferenceCenterMember_8a52e64f-daac-470e-b3fc-e13d0cc69487" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_3cb3bb9a-5adf-4f58-a09e-afb73079bebb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f33b7d51-f6ae-4c84-8d0f-07bb8fed597a" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_3cb3bb9a-5adf-4f58-a09e-afb73079bebb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_3cb3bb9a-5adf-4f58-a09e-afb73079bebb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_3cb3bb9a-5adf-4f58-a09e-afb73079bebb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_3cb3bb9a-5adf-4f58-a09e-afb73079bebb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_93317455-cc9b-43ec-b771-2bba6546d8c5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_3cb3bb9a-5adf-4f58-a09e-afb73079bebb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_93317455-cc9b-43ec-b771-2bba6546d8c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_eb16c86f-7588-4d42-bdf5-c5f36febf477" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_93317455-cc9b-43ec-b771-2bba6546d8c5" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_eb16c86f-7588-4d42-bdf5-c5f36febf477" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformationScheduleofOperatingDataforReportableSegmentsDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformationScheduleofOperatingDataforReportableSegmentsDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformationScheduleofOperatingDataforReportableSegmentsDetails" xlink:type="extended" id="id9b0fc79f8f24dcd840490de29ffb66b_SegmentInformationScheduleofOperatingDataforReportableSegmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_2fbcbb9a-36de-42d8-8940-705a5c3a5495" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RevenuesAndExpensesAbstract_2aa1e2ae-7a03-4234-8454-d5ee1cfcf0d1" xlink:href="eri-20200930.xsd#eri_RevenuesAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2fbcbb9a-36de-42d8-8940-705a5c3a5495" xlink:to="loc_eri_RevenuesAndExpensesAbstract_2aa1e2ae-7a03-4234-8454-d5ee1cfcf0d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1ddea620-a306-4600-b66c-51299f53cbea" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_RevenuesAndExpensesAbstract_2aa1e2ae-7a03-4234-8454-d5ee1cfcf0d1" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1ddea620-a306-4600-b66c-51299f53cbea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_UnallocatedIncomeAndExpensesAbstract_b3af614c-4a33-4362-a2b1-7403075f46f4" xlink:href="eri-20200930.xsd#eri_UnallocatedIncomeAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2fbcbb9a-36de-42d8-8940-705a5c3a5495" xlink:to="loc_eri_UnallocatedIncomeAndExpensesAbstract_b3af614c-4a33-4362-a2b1-7403075f46f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_6d200095-925d-4b3b-b87e-50f7a416a426" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_UnallocatedIncomeAndExpensesAbstract_b3af614c-4a33-4362-a2b1-7403075f46f4" xlink:to="loc_us-gaap_NetIncomeLoss_6d200095-925d-4b3b-b87e-50f7a416a426" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA_327ab37d-5f39-4b85-84e7-2706e4901006" xlink:href="eri-20200930.xsd#eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eri_UnallocatedIncomeAndExpensesAbstract_b3af614c-4a33-4362-a2b1-7403075f46f4" xlink:to="loc_eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA_327ab37d-5f39-4b85-84e7-2706e4901006" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_794b9c75-dcf5-4d24-a930-7d5e3ae96c21" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2fbcbb9a-36de-42d8-8940-705a5c3a5495" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_794b9c75-dcf5-4d24-a930-7d5e3ae96c21" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_bfaceff2-a3b0-4446-a503-ea64a62fb4a5" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_794b9c75-dcf5-4d24-a930-7d5e3ae96c21" xlink:to="loc_srt_ConsolidationItemsAxis_bfaceff2-a3b0-4446-a503-ea64a62fb4a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_bfaceff2-a3b0-4446-a503-ea64a62fb4a5_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_bfaceff2-a3b0-4446-a503-ea64a62fb4a5" xlink:to="loc_srt_ConsolidationItemsDomain_bfaceff2-a3b0-4446-a503-ea64a62fb4a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_5b9a9e2c-09bb-4110-8ec7-3e344a6f824b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_bfaceff2-a3b0-4446-a503-ea64a62fb4a5" xlink:to="loc_srt_ConsolidationItemsDomain_5b9a9e2c-09bb-4110-8ec7-3e344a6f824b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_220236ce-07de-4c35-92b1-86c57217dcbc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5b9a9e2c-09bb-4110-8ec7-3e344a6f824b" xlink:to="loc_us-gaap_OperatingSegmentsMember_220236ce-07de-4c35-92b1-86c57217dcbc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_ac2a326b-337c-4a17-9e1c-ca9c9dc0e56b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5b9a9e2c-09bb-4110-8ec7-3e344a6f824b" xlink:to="loc_us-gaap_CorporateNonSegmentMember_ac2a326b-337c-4a17-9e1c-ca9c9dc0e56b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_b7384771-097d-48a5-9739-798e959d499a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_794b9c75-dcf5-4d24-a930-7d5e3ae96c21" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_b7384771-097d-48a5-9739-798e959d499a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b7384771-097d-48a5-9739-798e959d499a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b7384771-097d-48a5-9739-798e959d499a" xlink:to="loc_us-gaap_SegmentDomain_b7384771-097d-48a5-9739-798e959d499a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8208aa0b-8dd7-4f01-8ff8-08321533eca0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b7384771-097d-48a5-9739-798e959d499a" xlink:to="loc_us-gaap_SegmentDomain_8208aa0b-8dd7-4f01-8ff8-08321533eca0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LasVegasMember_d8f3c823-9a62-4d7f-920e-cb8be2d35c11" xlink:href="eri-20200930.xsd#eri_LasVegasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8208aa0b-8dd7-4f01-8ff8-08321533eca0" xlink:to="loc_eri_LasVegasMember_d8f3c823-9a62-4d7f-920e-cb8be2d35c11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalMember_775d0097-9b0e-418a-9dd0-a14d21156925" xlink:href="eri-20200930.xsd#eri_RegionalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8208aa0b-8dd7-4f01-8ff8-08321533eca0" xlink:to="loc_eri_RegionalMember_775d0097-9b0e-418a-9dd0-a14d21156925" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagedInternationalCIEMember_f129600a-ff5c-4c66-8499-c0f3df5f90fb" xlink:href="eri-20200930.xsd#eri_ManagedInternationalCIEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8208aa0b-8dd7-4f01-8ff8-08321533eca0" xlink:to="loc_eri_ManagedInternationalCIEMember_f129600a-ff5c-4c66-8499-c0f3df5f90fb" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformationScheduleofAdjustedEBITDAbySegmentDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformationScheduleofAdjustedEBITDAbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformationScheduleofAdjustedEBITDAbySegmentDetails" xlink:type="extended" id="iae71974a01c7471c8d8a9e7d0f32be1c_SegmentInformationScheduleofAdjustedEBITDAbySegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_aa4eb7ab-1051-4a23-a545-243e6d9bbbe4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_NetIncomeLoss_aa4eb7ab-1051-4a23-a545-243e6d9bbbe4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_84180c9c-ccdf-4896-9915-28577d94012c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_84180c9c-ccdf-4896-9915-28577d94012c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClosedBlockOperationsIncomeLossFromDiscontinuedOperationsNetOfTax_050cc568-a779-4fb6-a0fc-6671fe43ce49" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClosedBlockOperationsIncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_ClosedBlockOperationsIncomeLossFromDiscontinuedOperationsNetOfTax_050cc568-a779-4fb6-a0fc-6671fe43ce49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_a0f2c137-f208-45e1-b7f9-cff00689b274" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_a0f2c137-f208-45e1-b7f9-cff00689b274" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_c63630ed-f481-4559-b403-7644426fb507" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_c63630ed-f481-4559-b403-7644426fb507" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingGainsLosses_3688aedf-76a9-44b6-b4ee-1bc8a317ba06" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_OtherNonoperatingGainsLosses_3688aedf-76a9-44b6-b4ee-1bc8a317ba06" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_426e67fb-dbd1-4d53-a7fc-39c0cb222aed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_AssetImpairmentCharges_426e67fb-dbd1-4d53-a7fc-39c0cb222aed" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_219daaf3-38fc-4395-a070-93968a9a7545" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_219daaf3-38fc-4395-a070-93968a9a7545" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_b8304407-2728-44a7-bd21-1f6c8eff811b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_b8304407-2728-44a7-bd21-1f6c8eff811b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_960626f2-bb06-45e7-9340-aa4b84423ef2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_960626f2-bb06-45e7-9340-aa4b84423ef2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLaborRelatedExpenses_d89f4d6a-0327-4c1c-9b7e-2e027dea4c4e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLaborRelatedExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_OtherLaborRelatedExpenses_d89f4d6a-0327-4c1c-9b7e-2e027dea4c4e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA_768f5d95-ec7d-469b-8d86-edb99ff8c7d7" xlink:href="eri-20200930.xsd#eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_eri_NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAdjustedEBITDA_768f5d95-ec7d-469b-8d86-edb99ff8c7d7" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2892c35b-6120-4b1d-b5d3-d816d811c9e9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9bc55fa6-65c6-48fe-9bda-830e4649799e" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2892c35b-6120-4b1d-b5d3-d816d811c9e9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_fbfda620-62bc-48e3-b2b1-cb39262a6331" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2892c35b-6120-4b1d-b5d3-d816d811c9e9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_fbfda620-62bc-48e3-b2b1-cb39262a6331" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_fbfda620-62bc-48e3-b2b1-cb39262a6331_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_fbfda620-62bc-48e3-b2b1-cb39262a6331" xlink:to="loc_us-gaap_SegmentDomain_fbfda620-62bc-48e3-b2b1-cb39262a6331_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_56b54c3f-0a17-4f47-9cab-755741432cab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_fbfda620-62bc-48e3-b2b1-cb39262a6331" xlink:to="loc_us-gaap_SegmentDomain_56b54c3f-0a17-4f47-9cab-755741432cab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LasVegasMember_c9bc6833-8342-47ef-aab0-5e575fb07489" xlink:href="eri-20200930.xsd#eri_LasVegasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_56b54c3f-0a17-4f47-9cab-755741432cab" xlink:to="loc_eri_LasVegasMember_c9bc6833-8342-47ef-aab0-5e575fb07489" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalMember_229177cd-002f-4537-8576-662ccb40739b" xlink:href="eri-20200930.xsd#eri_RegionalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_56b54c3f-0a17-4f47-9cab-755741432cab" xlink:to="loc_eri_RegionalMember_229177cd-002f-4537-8576-662ccb40739b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagedInternationalCIEMember_a4959f68-1915-4bdf-b2f5-7ea014f59565" xlink:href="eri-20200930.xsd#eri_ManagedInternationalCIEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_56b54c3f-0a17-4f47-9cab-755741432cab" xlink:to="loc_eri_ManagedInternationalCIEMember_a4959f68-1915-4bdf-b2f5-7ea014f59565" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_c1cd80b8-e704-43b0-a32b-ca2e015e7628" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2892c35b-6120-4b1d-b5d3-d816d811c9e9" xlink:to="loc_srt_ConsolidationItemsAxis_c1cd80b8-e704-43b0-a32b-ca2e015e7628" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_c1cd80b8-e704-43b0-a32b-ca2e015e7628_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_c1cd80b8-e704-43b0-a32b-ca2e015e7628" xlink:to="loc_srt_ConsolidationItemsDomain_c1cd80b8-e704-43b0-a32b-ca2e015e7628_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_5142371b-6460-475d-a15c-d3ade2c38540" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_c1cd80b8-e704-43b0-a32b-ca2e015e7628" xlink:to="loc_srt_ConsolidationItemsDomain_5142371b-6460-475d-a15c-d3ade2c38540" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_33e850af-9b8d-4a88-8a56-b40a21e47f06" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5142371b-6460-475d-a15c-d3ade2c38540" xlink:to="loc_us-gaap_OperatingSegmentsMember_33e850af-9b8d-4a88-8a56-b40a21e47f06" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_4b49acf2-d03a-4886-90b5-ed90eea0b304" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5142371b-6460-475d-a15c-d3ade2c38540" xlink:to="loc_us-gaap_CorporateNonSegmentMember_4b49acf2-d03a-4886-90b5-ed90eea0b304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2c4f074c-be3d-4444-99ff-6f569c09d26d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2892c35b-6120-4b1d-b5d3-d816d811c9e9" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2c4f074c-be3d-4444-99ff-6f569c09d26d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2c4f074c-be3d-4444-99ff-6f569c09d26d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2c4f074c-be3d-4444-99ff-6f569c09d26d" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2c4f074c-be3d-4444-99ff-6f569c09d26d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_f2bc695d-2197-48bd-b0a7-feef10d29720" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2c4f074c-be3d-4444-99ff-6f569c09d26d" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_f2bc695d-2197-48bd-b0a7-feef10d29720" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_2bb9dadc-5ba8-487c-8913-c4db3ffc960f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_f2bc695d-2197-48bd-b0a7-feef10d29720" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_2bb9dadc-5ba8-487c-8913-c4db3ffc960f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.eldoradoresorts.com/role/SegmentInformationScheduleOfCapitalExpendituresBySegmentDetails" xlink:type="simple" xlink:href="eri-20200930.xsd#SegmentInformationScheduleOfCapitalExpendituresBySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.eldoradoresorts.com/role/SegmentInformationScheduleOfCapitalExpendituresBySegmentDetails" xlink:type="extended" id="i18cc6e830c0d4694a24560c4512c571e_SegmentInformationScheduleOfCapitalExpendituresBySegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_c9b2f396-dec6-41b7-b089-fb9f1a4f4edb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_CapitalExpendituresNet_e2e623df-ac34-4a90-8c44-8ed0a9c76cd6" xlink:href="eri-20200930.xsd#eri_CapitalExpendituresNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_c9b2f396-dec6-41b7-b089-fb9f1a4f4edb" xlink:to="loc_eri_CapitalExpendituresNet_e2e623df-ac34-4a90-8c44-8ed0a9c76cd6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_08f7042b-c750-4555-86ba-cad14685be92" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_c9b2f396-dec6-41b7-b089-fb9f1a4f4edb" xlink:to="loc_us-gaap_Assets_08f7042b-c750-4555-86ba-cad14685be92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_004bd6ce-2232-45c5-b8ec-e2d52f716977" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_c9b2f396-dec6-41b7-b089-fb9f1a4f4edb" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_004bd6ce-2232-45c5-b8ec-e2d52f716977" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_004bd6ce-2232-45c5-b8ec-e2d52f716977" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae" xlink:to="loc_us-gaap_SegmentDomain_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8b11d8c2-21d1-49c0-ab5c-ca40f3dd4aae" xlink:to="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_LasVegasMember_a92262a9-0788-4e62-9836-75f3109fb9c4" xlink:href="eri-20200930.xsd#eri_LasVegasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:to="loc_eri_LasVegasMember_a92262a9-0788-4e62-9836-75f3109fb9c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalMember_99d41d66-f049-4546-afcb-58c6d861ae3f" xlink:href="eri-20200930.xsd#eri_RegionalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:to="loc_eri_RegionalMember_99d41d66-f049-4546-afcb-58c6d861ae3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_ManagedInternationalCIEMember_a61436e2-de77-4a17-9366-3709d5566a40" xlink:href="eri-20200930.xsd#eri_ManagedInternationalCIEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:to="loc_eri_ManagedInternationalCIEMember_a61436e2-de77-4a17-9366-3709d5566a40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eri_RegionalAndManagedInternationalAndCIEMember_c24b70af-27f9-48fd-907e-b1969b2cf0f1" xlink:href="eri-20200930.xsd#eri_RegionalAndManagedInternationalAndCIEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3525ca0a-918b-4cea-af64-5ba3aef13527" xlink:to="loc_eri_RegionalAndManagedInternationalAndCIEMember_c24b70af-27f9-48fd-907e-b1969b2cf0f1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_15f88530-6263-4d0d-8768-bcd960149f52" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_004bd6ce-2232-45c5-b8ec-e2d52f716977" xlink:to="loc_srt_ConsolidationItemsAxis_15f88530-6263-4d0d-8768-bcd960149f52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_15f88530-6263-4d0d-8768-bcd960149f52_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_15f88530-6263-4d0d-8768-bcd960149f52" xlink:to="loc_srt_ConsolidationItemsDomain_15f88530-6263-4d0d-8768-bcd960149f52_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_4d2c6496-4dec-4385-9f9e-0af693ed8a16" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_15f88530-6263-4d0d-8768-bcd960149f52" xlink:to="loc_srt_ConsolidationItemsDomain_4d2c6496-4dec-4385-9f9e-0af693ed8a16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_0fcfa811-8887-4702-81b9-a6bc75aed83b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_4d2c6496-4dec-4385-9f9e-0af693ed8a16" xlink:to="loc_us-gaap_OperatingSegmentsMember_0fcfa811-8887-4702-81b9-a6bc75aed83b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_63653494-9048-45ec-9139-4592cd6282d1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_4d2c6496-4dec-4385-9f9e-0af693ed8a16" xlink:to="loc_us-gaap_CorporateNonSegmentMember_63653494-9048-45ec-9139-4592cd6282d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_96cc881b-d9b4-4277-8134-c194dce5f0e9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_004bd6ce-2232-45c5-b8ec-e2d52f716977" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_96cc881b-d9b4-4277-8134-c194dce5f0e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_96cc881b-d9b4-4277-8134-c194dce5f0e9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_96cc881b-d9b4-4277-8134-c194dce5f0e9" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_96cc881b-d9b4-4277-8134-c194dce5f0e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_b6af8bcb-1cf9-4bf8-95dd-5b5b48e6975a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_96cc881b-d9b4-4277-8134-c194dce5f0e9" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_b6af8bcb-1cf9-4bf8-95dd-5b5b48e6975a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_1af2071c-ce41-4c36-bc8b-541336aa2d66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_b6af8bcb-1cf9-4bf8-95dd-5b5b48e6975a" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_1af2071c-ce41-4c36-bc8b-541336aa2d66" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
