bun - definition and synonyms

 
noun [countable] 

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/bʌn/
singularbun
pluralbuns
  1. 2
    a small round piece of bread

    a burger in a bun

     Synonyms and related words
  2. 3
    a hairstyle in which a woman’s hair is tied in a tight round ball at the back of or on top of her head
  3. 4

    buns

    [plural] mainly American informal someone’s buttocks