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

Despite the frustrations that come with creating one, a truly sleek bun doesn't require growing a third arm and relentless yanking of your strands. — Marci Robin, Allure, 21 Aug. 2026

The Oscar Mayer Wienermobile is in town this weekend (see the article for a schedule of stops), and Gregory got a privileged place inside the bun for a spin around the city. — Aj Willingham, AJC.com, 21 Aug. 2026

There is also a brisket burger with a chipotle brioche bun and all the accoutrements. — Ella Gonzales, Fort Worth Star-Telegram, 20 Aug. 2026

Once the pan is hot, place the buns, butter side down, in the pan and cook for 3 to 5 minutes, until the insides of the buns are crisp and golden brown. — ABC News, 16 Aug. 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