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

Noun (1)

• backside
• behind
• booty [slang]
• bootie
• bottom
• breech
• bum
• butt
• buttocks
• caboose
• can
• cheeks
• derriere
• derrière
• duff
• fanny
• fundament
• hams
• haunches
• heinie [slang]
• hunkers
• keister [slang]
• keester
• nates
• posterior
• rear
• rear end
• rump
• seat
• tail
• tail end
• tush [slang]

Examples of bun in a Sentence

Noun (1)

an exercise to firm your buns

Recent Examples on the Web

Noun

The wings are doused in a housemade honey chipotle sauce while the burgers are hand-pressed with local beef and have the restaurant’s logo branded into the bun. —Demarco Williams, Forbes.com, 16 May 2025

Pita then wrapped the remaining hair around the base of the bun and used the end of a comb to make sure not a single hair was out of place. —Kara Nesvig, Allure, 14 May 2025

On Tuesday, May 11, the SKIMS founder, 44, was spotted going into the Palais de Justice court in Paris, wearing a black blazer and skirt combo with her hair sleeked up into a bun. —Nicole Acosta, People.com, 13 May 2025

Friday, May 23, Hot Dog with whole grain bun, fries, peas, fresh orange, milk. —Ramona Sentinel, San Diego Union-Tribune, 6 May 2025

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
• 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