bun

1 of 2

noun (1)

ˈbən 

1

: a sweet or plain small bread

especially : a round roll see also sticky bun

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

For glam, Obama wore her braids pulled back into low bun with a few face-framing strands left loose. — Julia Teti, Footwear News, 11 Sep. 2026

The cold, creamy one comes on a rosemary brioche bun that is griddled to order and is nothing short of heavenly. — Todd Plummer, Condé Nast Traveler, 9 Sep. 2026

Sesame flour is no longer an ingredient in their buns across its 10 states. — Paris Barraza, USA Today, 9 Sep. 2026

And the jalapeño-cheddar bun is such a fun touch — with a profile almost like unsweetened cornbread, but in sturdy bread form. — Rachel Bernhard, jsonline.com, 9 Sep. 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

• cinnamon bun
• have a bun in the oven
• iced bun
• man 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