1A black bow tie worn with a dinner jacket.Men at their sides may have been attired in black frock coats, over waistcoats, white wing-collar shirts, black ties and top hats....
The boys were all in black dinner jackets and black ties.
Every week they dress up in dinner jackets and black ties to visit old people's homes and sing old and well-loved songs to their delighted audiences.
1.1[mass noun]Formal evening dress:the audience wears black tie[as modifier]:evening meals were black-tie affairs