subwaynounmasculine/ˈmɛtɾu/highme·troPortuguesEnglishEspanolFrancaisDefinitionAn underground urban transportation system.The subway is a fast way to get around the city.He takes the subway every day to work.synmetrotubeantcarbusCommon collocationssubway linesubway stationEtymologyDo francês 'métropolitain'Related wordsmetropolitanometropolita