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
Brian Anthony Hernandez, PEOPLE, 8 Nov. 2025
The actress wore her hair up in a bun and accessorized with dangly earrings.
—Janelle Ash, FOXNews.com, 8 Nov. 2025
The signature challenge is to make two batches of iced buns in different flavors and fillings.
—Brian Moylan, Vulture, 7 Nov. 2025
The McRib comes on a toasted bun and consists of a boneless pork patty, barbeque sauce, dill pickles and onions.
—Haadiza Ogwude, Cincinnati Enquirer, 7 Nov. 2025
See All Example Sentences for bun
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Noun
Congratulations on your healthy baby bun.
—Brian Anthony Hernandez, PEOPLE, 8 Nov. 2025
The actress wore her hair up in a bun and accessorized with dangly earrings.
—Janelle Ash, FOXNews.com, 8 Nov. 2025
The signature challenge is to make two batches of iced buns in different flavors and fillings.
—Brian Moylan, Vulture, 7 Nov. 2025
The McRib comes on a toasted bun and consists of a boneless pork patty, barbeque sauce, dill pickles and onions.
—Haadiza Ogwude, Cincinnati Enquirer, 7 Nov. 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 10 Nov. 2025.
Copy CitationMedical Definition
BUN
noun
: the concentration of nitrogen in the form of urea in the blood
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