Origin: (1-3, 5) 1300-1400 Perhaps from Old French bugne swelling (caused by a blow), type of fritter (4) 1800-1900 Perhaps from Scottish Gaelic bun; ➔ BUNNY
1 a small round type of bread: a hamburger bun2a hairstyle in which a woman with long hair fastens it in a small round shape at the back of her head3buns [plural] informal the part of your body that you sit on → see alsobuttock