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bun

 
 
/bʌn/ noun [C]

Definition

CAKE UK a small, round cake: an iced bun
BREAD a small, round piece of bread: a hamburger/hot cross bun
HAIR a hairstyle in which the hair is arranged in a small, round shape on the back of the head
(Definition of bun noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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