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

Loose tendrils escaped the bun, framing Kravitz’s face and drawing attention to her glowy glam. — Arushi Jacob, Footwear News, 3 Nov. 2026

In recent years the quintessential hairstyle on the red carpet has featured the hair pulled completely back in a slick-back bun à la Hailey Bieber. — María Diez, Glamour, 3 Nov. 2026

Pork buns were laying on the preparation table unattended, without diligent preparation, while employees were cooking and preparing other meals. — Sacbee.com, 30 Oct. 2026

Malti, 4, wore her dark hair in a ballerina bun complete with a tiny white bow. — Hannah Malach, InStyle, 29 Oct. 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