tux·e·do 
(tŭk-sēdō)
(tŭk-sēdō)n. pl. tux·e·dos or tux·e·does
1. A dress jacket, usually black with satin or grosgrain lapels, worn for formal or semiformal occasions. Also called dinner jacket.
2. A complete outfit including this jacket, trousers usually with a silken stripe down the side, a bow tie, and often a cummerbund.
[Short for Tuxedo coat, after a country club at Tuxedo Park, a village of southeast New York.]
tux·edoed adj.