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

The singer paired the look with strappy black high-heel shoes, multiple rings and dangling earrings, choosing to wear her hair in a low bun with a few pieces left out, and blunt bangs. —Lori A Bashian, FOXNews.com, 14 June 2026

The Star tried the Egg & Cheese breakfast sandwich (egg, cheese, the choice of sausage or bacon on a croissant bun; $8) and an iced latte with honey made with beans from the Roasterie; $5. —Kansas City Star, 12 June 2026

Her hair was worn up in a tousled bun at the nape of her neck with dense bangs. —Anna Cafolla, Vogue, 12 June 2026

That’s why the maple syrup in Vancouver comes in the form of a smokie sausage topped with maple bacon onion jam in a brioche bun and the popular poutine—fries loaded with beef gravy and Canadian cheese curds—features pulled short rib. —Tim Newcomb, Forbes.com, 12 June 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