white tie

Noun white tie has 2 senses

• white tie(n = noun.artifact) - bow tie worn as part of a man's formal evening dress;
is a kind of bow-tie, bow tie, bowtie

• white tie(n = noun.artifact) dress suit, full dress, tail coat, tailcoat, tails, white tie and tails - formalwear consisting of full evening dress for men;
is a kind of evening clothes, evening dress, eveningwear, formalwear
has parts: morning coat, swallow-tailed coat, swallowtail