Definition of black tie in US English:

black tie

noun

  • 1A black bow tie worn with a dinner jacket.

    • ‘Get your black ties and posh frocks out for a proms evening.’
    • ‘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.’
    • ‘Men at their sides may have been attired in black frock coats, over waistcoats, white wing-collar shirts, black ties and top hats.’
    • ‘We're looking for upscale wedding guests and high rolling party guests with your own upscale wardrobe (tuxedos, black ties, sexy gowns, rhinestone formals).’
    • ‘We were outside a small church, decked out in gowns and black ties.’
    • ‘In the cheap seats, you sit with people who are appreciating the music, rather than among the black ties and posh frocks who are just there to be seen.’
    • ‘This is not your typical wine tasting - no black ties or stuffy attitudes, just friendly people out for a bit of fun and discovery.’
    • ‘Diplomats dressed in their black ties or their national costumes dined, wined and danced in the beautifully decorated ballroom.’
    • ‘The waiters have new uniforms: pinstripe trousers, tail coats, starched shirts with black ties.’
    • ‘Ball gowns and black ties were the dress code as the town council hosted its yearly civic dinner and dance in glamorous style.’
    • ‘These guests seriously enjoy dressing up in very posh frocks and stylish black ties for dinner.’
    • ‘Overseeing the white linen covered tables were crisply dressed waiters in white starched shirts and black ties.’
    1. 1.1 Formal evening dress.
      ‘the audience wears black tie’
      as modifier ‘evening meals were black-tie affairs’

Pronunciation

black tie

/ˌblæk ˈtaɪ//ˌblak ˈtī/