white tie 
noun
1A white bow tie worn by men as part of full evening dress.Officials asked the university senate to enforce a historic dress code barring all forms of dress apart from traditional white ties and suits....
- Another favourite for Win was a ceremony in the theme of Chicago gangsters, the men in black shirts and white ties and carrying violin cases.
- This was five-man boy band Surge, who came on in black shirts and trousers with white ties, doing a synchronised R & B dance routine to their soca hybrid song In Your Timing Girl.
1.1 [mass noun] Full evening dress with a white bow tie: he was wearing immaculate white tie and tails [as modifier]: a white-tie dinner...
- If you give them your measurements in advance you ought to be okay - I've had both black and white tie from there without fittings and it's been okay.
- If we were in Semi-Monde, and I was debonair in white-tie and she was diaphanous in her black-and-gold evening gown, I'd languidly reply: ‘Thanks.’
- Social Scientist Jim Sleeper quit the Yale Glee Club after his junior year, in 1968, because, as he has told me, ‘With all that was going on in the world, I couldn't spend the weekends touring in white-tie.’
- livener
- liveness
- live oak
- live off (or on)
- live off (or on) the fat of the land
- live off the land
- live one
- live one's own life
- live on one's nerves (or one's nerve ends)
- live out of a suitcase
- liver
- live rail
- liverance
- 'liverance
- liver-brown
- liver chestnut
- liver complaint
- liverd
- livered
- live register
- liver fluke
- liver-grown
- liver-hearted
- liveried
- livering