1
: a sweet or plain small bread
especially
: a round roll
2
: a knot of hair shaped like a bun
3
Examples of bun in a Sentence
Noun (1)
an exercise to firm your buns
Recent Examples on the Web
Sarah Sotoodeh, FOXNews.com, 14 Dec. 2025
Its most famous dish is its roasted pork bun ($3), which is best enjoyed while steaming hot.
—Rachel Chang, Travel + Leisure, 12 Dec. 2025
Both American Coney Island and National Coney Island have kits that include hot dogs, buns, chili and even a paper hat.
—Susan Selasky, Freep.com, 11 Dec. 2025
Then wrap extra pieces of pipe cleaner into small buns and glue them onto each end, creating little earmuffs.
—Cody Godwin, USA Today, 10 Dec. 2025
See All Example Sentences for bun
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Noun
Hudson wore her blonde hair pulled back into a low bun and delicate earrings for the premiere.
—Sarah Sotoodeh, FOXNews.com, 14 Dec. 2025
Its most famous dish is its roasted pork bun ($3), which is best enjoyed while steaming hot.
—Rachel Chang, Travel + Leisure, 12 Dec. 2025
Both American Coney Island and National Coney Island have kits that include hot dogs, buns, chili and even a paper hat.
—Susan Selasky, Freep.com, 11 Dec. 2025
Then wrap extra pieces of pipe cleaner into small buns and glue them onto each end, creating little earmuffs.
—Cody Godwin, USA Today, 10 Dec. 2025
See All Example Sentences for bun
Cite this Entry
“Bun.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bun. Accessed 15 Dec. 2025.
Copy CitationMedical Definition
BUN
noun
: the concentration of nitrogen in the form of urea in the blood
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