Adjective black tie has 1 sense
  1. semiformal, semi-formal, black-tie - moderately formal; requiring a dinner jacket; "he wore semiformal attire"; "a black-tie dinner"
    Antonym: informal (indirect, via formal)
,Noun black tie has 2 senses
  1. dinner jacket, tux, tuxedo, black tie - semiformal evening dress for men
    --1 is a kind of formalwear, eveningwear, evening dress, evening clothes
  2. black tie - a black bow tie worn with a dinner jacket
    --2 is a kind of
    bow tie
,
TOP