tuxedo       
noun [ C ] mainly US uk/tʌkˈsiː.dəʊ/ us/tʌkˈsiː.doʊ/  tuxedos (informal tux, /tʌks/ /tʌks/); (UK usually dinner jacket)
 (指男式)晚礼服
a man's black or white jacket worn at formal social events, usually in the evening, with matching trousers and a bow tie
 Compare: black tie