- formalwear, eveningwear, evening dress, evening clothes - attire to wear on formal occasions in the evening
--1 is a kind of attire, garb, dress
--1 has particulars:balldress; dinner dress, dinner gown, evening gown, tea gown; dinner jacket, tux, tuxedo, black tie; dress suit, full dress, tailcoat, tail coat, tails, white tie, white tie and tails