dinner jacket

Etymology
So called because it is worn by men to formal dinners.

Noun

 * 1)  A jacket, often white, corresponding to a tuxedo jacket.
 * 2)  The formal suit, typically black, that includes this type of jacket.
 * 1)  The formal suit, typically black, that includes this type of jacket.
 * 1)  The formal suit, typically black, that includes this type of jacket.

Translations

 * Catalan: esmòquing
 * Finnish: smokkitakki, smokin takki