bunPronunciation: /bʌn/Translate bun | into French | into German | into Italian | into Spanish Definition of bun 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 originbun in other Oxford dictionaries Definition of bun in the US English dictionary
