roarnounmasculine/ʁuˈʒiðu/mediumru·gi·doPortuguesEnglishEspanolFrancaisDefinitionA loud, deep sound made by an animal such as a lion, or by an engine, the wind, etc.The roar of the crowd could be heard from miles away.The engine let out a powerful roar as the car accelerated.synroarbellowCommon collocationslion's roardeafening roarengine roarEtymologyDo latim 'rugitus'.Related wordsrugirrugidor