Meaning of BLACK TIE

Pronunciation:			blak tI
WordNet Dictionary
	Definition:		[n]  a black bow tie worn with a dinner jacket [n]  semiformal evening dress for men [adj]  moderately formal; requiring a dinner jacket; "he wore semiformal attire"; "a black-tie dinner"
	Synonyms:		dinner jacket, formal, semiformal, semi-formal, tux, tuxedo
	See Also:		bow tie, evening clothes, evening dress, eveningwear, formalwear