black-tie

[ blak-tahy ]
/ ˈblækˈtaɪ /

adjective

requiring that guests wear semiformal attire, especially that men wear black bow ties with tuxedos or dinner jackets: a black-tie dance.
Compare white-tie.

Origin of black-tie

First recorded in 1930–35

Definition for black-tie (2 of 2)

black tie

noun

a black bow tie, worn with a dinner jacket.
semiformal evening wear for men (distinguished from white tie).

Origin of black tie

First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for black-tie

British Dictionary definitions for black-tie

black tie

noun

a black bow tie worn with a dinner jacket
(modifier) denoting an occasion when a dinner jacket should be worn
Compare white tie
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012