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

The curls and romantic coifs of previous years were swapped for straighter, more polished strands and a rotation of prim buns and neat half-updos, albeit with her signature bangs intact. —Calin Van Paris, InStyle, 16 Feb. 2026

How Carolyn Bessette wore a headband Carolyn Bessette delivered a master class in how versatile a headband can be, styling her long blonde hair straight and loose, in a sleek low ponytail, or gathered in a nape-skimming bun. —Fiona Embleton, Glamour, 16 Feb. 2026

Lipa’s hair was slicked back into a tight bun, complemented by a soft, understated makeup look. —Kelsey Stewart, Footwear News, 15 Feb. 2026

Dress the cakes up on a bun with some pickled onions, tomato, and tartar sauce. —Phoebe Evans, Southern Living, 15 Feb. 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
• 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