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

Or a cartoony hamburger that is doing a little too much — the cheese drip a little too textured, the shine on the bun a little uncanny. — Clio Chang, Curbed, 22 June 2026

The Grill, Chill & Stay Safe events will provide frozen hamburger patties, hot dogs, buns and watermelons in addition to other food options for Fresh Start Market shoppers. — Post-Tribune, Chicago Tribune, 22 June 2026

Itineraries guide food-lovers to Breyðvirkið, the Faroe Islands’ sole artisanal sourdough bakery, renowned for its exceptional coffee and its ‘BMO’ (bolle med ost), a classic Scandinavian breakfast of a fresh sourdough bun with butter and cheese. — Rebecca Ann Hughes, Forbes.com, 20 June 2026

Playful bun feet and a sturdy oak construction lay the foundation for an oversized top that hinges in the middle. — Rachel Fletcher, Architectural Digest, 19 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