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

Martha Stewart hosted a luncheon at Joe’s Stone Crab, Italian celebrity butcher Dario Cecchini tossed slabs of beef into an eager dinner crowd, and Ray reprised her Burger Bash, where everything from Kool-Aid pickles to foie gras adorned smashed wagyu patties on potato buns. —ABC News, 24 Feb. 2026

Martha Stewart hosted a luncheon at Joe's Stone Crab, Italian celebrity butcher Dario Cecchini tossed slabs of beef into an eager dinner crowd, and Ray reprised her Burger Bash, where everything from Kool-Aid pickles to foie gras adorned smashed wagyu patties on potato buns. —CBS News, 24 Feb. 2026

Other menu options are the Sandwich Combo, which puts the 3 Finger Combo on a bun with lettuce and swaps out the Texas toast; and a kid’s meal with two fingers, a small fry and a kid-sized drink. —Heidi Finley, Charlotte Observer, 23 Feb. 2026

Hudson’s hair, however, boasted a soft doughnut bun in the back. —Kaleigh Werner, Footwear News, 23 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