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)

• 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

Glam was kept bronzed, with oil-spill black talon nails changed to a sheer satiny pink, and her hair slicked back in a tight bun, extra-long, teeny, tiny braids let down later. —Anna Cafolla, Vogue, 25 Oct. 2025

True was pictured with her hair up in two space buns with two tiny braids in front. —Hannah Sacks, PEOPLE, 24 Oct. 2025

Highlights here include handmade pork and shrimp siu mai, Cantonese sticky rice with pork and mushrooms, turnip cake, barbecue pork buns, soup dumplings and shrimp rice rolls. —Brock Keeling, Oc Register, 23 Oct. 2025

Gerber pulled her wavy hair back into a messy bun and opted for a light makeup look, shifting all the attention to her colorful outfit. —Kelsey Stewart, Footwear News, 23 Oct. 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