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
Roger Naylor, AZCentral.com, 6 Dec. 2025
That led to a battle between Groen and McDonald's chief Ray Kroc, who was preparing his own meatless alternative that consisted of a slice of pineapple between two buns called the Hula Burger.
—Alex Perry, Cincinnati Enquirer, 5 Dec. 2025
Bakery Bread One of my all-time favorite Publix items is brioche hamburger buns, found in the bakery section.
—Lisa Cericola, Southern Living, 4 Dec. 2025
There’s even a savory section, with cheesy sun buns and a mushroom and truffle quiche that explores the full umami spectrum.
—Anna Cafolla, Vogue, 4 Dec. 2025
See All Example Sentences for bun
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Noun
Burgers are half-pound Angus patties that push out beyond the edges of the bun—almost a burger with wings.
—Roger Naylor, AZCentral.com, 6 Dec. 2025
That led to a battle between Groen and McDonald's chief Ray Kroc, who was preparing his own meatless alternative that consisted of a slice of pineapple between two buns called the Hula Burger.
—Alex Perry, Cincinnati Enquirer, 5 Dec. 2025
Bakery Bread One of my all-time favorite Publix items is brioche hamburger buns, found in the bakery section.
—Lisa Cericola, Southern Living, 4 Dec. 2025
There’s even a savory section, with cheesy sun buns and a mushroom and truffle quiche that explores the full umami spectrum.
—Anna Cafolla, Vogue, 4 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 7 Dec. 2025.
Copy CitationMedical Definition
BUN
noun
: the concentration of nitrogen in the form of urea in the blood
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