[tuhk-see-doh] 
| 1. | Also called dinner jacket. a man's jacket for semiformal evening dress, traditionally of black or dark-blue color and characteristically having satin or grosgrain facing on the lapels. |
| 2. | the complete semiformal outfit, including this jacket, dark trousers, often with silk stripes down the sides, a bow tie, and usually a cummerbund. |
| dinner jacket n. See tuxedo. |
| tux·e·do (tŭk-sē'dō) n. pl. tux·e·dos or tux·e·does
[Short for Tuxedo coat, after a country club at Tuxedo Park, a village of southeast New York.] tux·e'doed adj. |
"The Wolf tribe in New York was called in scorn by other Algonquians tuksit: round foot, implying that they easily fell down in surrender. In their region thus came the names Tuxedo and Tuxedo Lake, which were acquired by the Griswold family in payment of a debt. There the family established the exclusive Tuxedo Club, and there in the late 1880s Griswold Lorillard first appeared in a dinner jacket without tails, a tuxedo. By a twist of slang, one may now refer to a man in a tuxedo as a 'wolf." [Shipley]But in another version of the story, p'tuksit was the Algonquian word for "wolf," the animal, perhaps from the shape of its paws. Short form tux is attested from 1922.