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

Guests can choose to grab a smoothie and pastry to go or enjoy a leisurely breakfast of bacon and egg sammys on brioche buns or a forest mushroom and goat cheese omelet. — Condé Nast, Condé Nast Traveler, 6 Oct. 2026

With the bread flour, the end result is a lovely, crowd-pleasing bun that’s great for snacking on its own or enjoying alongside a special holiday meal. — Hana Asbrink, Bon Appetit Magazine, 1 Oct. 2026

The entire middle bun was essentially a sopping wet rag designed to do little more than absorb and deliver sauce into your mouth. — Tara Massouleh McCay, Southern Living, 1 Oct. 2026

But the glossy bun, which was toasted just enough — unlike the bun on my neighbor’s order — couldn’t hold the sandwich. — Restaurant Critic, Houston Chronicle, 30 Sep. 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