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

This bun held together, unlike most gluten-free buns at my most favorite restaurants. — Sophie Lindberg, Kansas City Star, 17 July 2026

Dugan's Pub Dugan's Pub in Little Rock's River Market district will screen the World Cup final and offer a number of specials in honor of the match, including $7 craft cocktails and $10 mini cheeseburgers on pretzel buns. — Arkansas Online, 17 July 2026

The Eras Tour performer is pictured squatting in her dreamy pink-and-white strapless gown by designer Markarian, offering a closer look at her teardrop earrings and classic low-bun updo. — Ashleigh Carter, InStyle, 17 July 2026

The glossy domed bun, truffle aioli and wagyu beef helped elevate the burger above standard pub fare. — Brady MacDonald, Oc Register, 16 July 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