- 1 [countable] a small, round, flat type of bread a hamburger bun compare roll
- 2 [countable] a small, round, sweet cake a cinnamon bun a sticky bun see also hot cross bun
- 3[countable] long hair that has been twisted into a round shape and is worn on top, or at the back of the head She wore her hair in a bun.
- 4 buns [plural] (informal) the two sides of a person's bottom Idioms
to be pregnant
have a bun in the oven (informal) (humorous)jump to other results