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
Jennifer Borresen,
USA Today,
3 July 2026
The bun itself sits high on the crown, Renato having somehow achieved no less than a perfect circle of hair.
—
Marci Robin,
Allure,
3 July 2026
Walsh completed the look with black Jimmy Choo stilettos and Fernando Jorge diamonds, including long, ivy-like earrings that remained visible beneath Gomez’s high bun.
—
Maggie Clancy,
Footwear News,
3 July 2026
The Northern California chain was known for its Kojas, a sandwich filled with Korean BBQ meat and sauces between garlic-fried-rice buns.
—
Emma Hall,
Sacbee.com,
2 July 2026
See All Example Sentences for bun
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Noun
During this process, enzymes begin to break down proteins, such as those found in hot dogs, while carbohydrates from the buns are converted into sugars.
—
Jennifer Borresen,
USA Today,
3 July 2026
The bun itself sits high on the crown, Renato having somehow achieved no less than a perfect circle of hair.
—
Marci Robin,
Allure,
3 July 2026
Walsh completed the look with black Jimmy Choo stilettos and Fernando Jorge diamonds, including long, ivy-like earrings that remained visible beneath Gomez’s high bun.
—
Maggie Clancy,
Footwear News,
3 July 2026
The Northern California chain was known for its Kojas, a sandwich filled with Korean BBQ meat and sauces between garlic-fried-rice buns.
—
Emma Hall,
Sacbee.com,
2 July 2026
See All Example Sentences for bun
Cite this Entry
“Bun.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bun. Accessed 5 Jul. 2026.
Copy CitationMedical Definition
BUN
noun
: the concentration of nitrogen in the form of urea in the blood
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