1.DCCa man’s jacket that is usually black, worn on formaloccasions 〔在正式场合穿的〕男式无尾礼服上衣
2.DCCa man’s suit that includes this type of jacket 一套男式无尾礼服
Examples from the Corpus
tuxedo• She draws a man in a tuxedo, places him at an angle on the page.• I mean by that a tuxedo, as I think you will probably know it.• And tuxedos are definitely not required.• Then a few days later we had opening night, and I was in my first tuxedo.• Then he reaches into the pocket of his tuxedo and produces his type-written acceptancespeech.• He wore a pair of greyshoes, baggy white trousers and what appeared to be a redtuxedo.• They are in their tuxedos and ballgowns.• What do you have to do other than see if your tuxedo still fits?