Meaning of “bun” in the English Dictionary

"bun" in American English

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bunnoun [ C ]

us /bʌn/

bun noun [ C ] (BREAD)

a small, round piece of bread, used for a sandwich, or a small, round, sweet bread:

Buy some hamburger buns for supper.

bun noun [ C ] (KNOT)

hair arranged into a round knot at the back of the head

(Definition of “bun” from the Cambridge Academic Content Dictionary © Cambridge University Press)