bun

 
Pronunciation: /bʌn/

noun

  • 1a small cake, typically containing dried fruit: a currant bun
  • a bread roll.
  • (in Scotland and Jamaica) a rich fruit cake or currant bread.
  • 2a hairstyle in which the hair is drawn back into a tight coil at the back of the head.
  • 3 (buns) North American informal a person’s buttocks.

Phrases

have a bun in the oven

informal be pregnant.

Origin:

late Middle English: of unknown origin