bun

1 of 2

noun (1)

ˈbən 

1

: a sweet or plain small bread

especially : a round roll

2

: a knot of hair shaped like a bun

3

buns plural : buttocks

bun

2 of 2

noun (2)

: load sense 4

Synonyms of bun

Noun (1)

• cheeks
• tail
• bum
• seat
• rump

Examples of bun in a Sentence

Noun (1)

an exercise to firm your buns

Recent Examples on the Web

Noun

Curry House Coco Ichibanya, operating in the park’s Mercado area in Secption 104, will be offering curry rice, curry buns, keema cheese fries and garlic nan bread. —Pam Kragen, San Diego Union-Tribune, 20 Mar. 2026

Her hair, with a neat middle part, was pulled back tightly into a low bun to frame her face perfectly, and it was all punctuated with a strong red lip. —Gretta Monahan, Boston Herald, 19 Mar. 2026

Ceretti, meanwhile, wore a burgundy dress, with her hair done in a tight, slick-back bun. —Saman Shafiq, USA Today, 16 Mar. 2026

Also new is the Bacon Onion Jam Smashburger, a Black Angus beef burger with Nashville hot rub, white American cheese, pickles, bacon chipotle onion jam, shredded lettuce, El Gallo BBQ sauce and miso ranch served on a King’s Hawaiian bun. —Richard Guzman, Daily News, 16 Mar. 2026

Word History

Etymology

Noun (1)

Middle English bunne

Noun (2)

perhaps from bun entry 1

First Known Use

Noun (1)

14th century, in the meaning defined at sense 1

Noun (2)

1898, in the meaning defined above

Phrases Containing bun

• have a bun in the oven
• iced bun
• sticky bun

Rhymes for bun

• done
• dun
• fun
• gun
• hun
• jun
• none
• nun
• one
• pun
• run
• shun

Kids Definition

bun

noun

ˈbən

1

: a sweet or plain small bread

especially : a round roll

2

: a knot of hair shaped like a bun

Medical Definition

BUN

noun

ˌbē-ˌyü-ˈen 

: the concentration of nitrogen in the form of urea in the blood