plural onions
1
: a widely cultivated Asian herbaceous plant (Allium cepa) of the amaryllis family that has a pungent edible bulb and that is closely related to the garlic, chive, and leek
also
: its bulb
2
: any of various usually ornamental alliums (such as Allium amplectens or A. caeruleum) related to the onion
Examples of onion in a Sentence
The recipe calls for chopped onions.
He is growing onions in the garden this year.
The recipe calls for chopped onion.
Recent Examples on the Web
Avoid sausages that contain garlic, onions, or heavy seasoning.
—
Ross Rosenfeld, MSNBC Newsweek, 23 Apr. 2025
During the onion outbreak, oh my goodness, there were onions everywhere.
—Faris Tanyos, CBS News, 23 Apr. 2025
Thread chicken, pepperoncini peppers, and onion pieces onto skewers.
—Catherine Jessee, Southern Living, 22 Apr. 2025
Pair with an onion tart with white wine caramel sauce.
—Tom Mullen, Forbes.com, 21 Apr. 2025
See All Example Sentences for onion
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Ross Rosenfeld, MSNBC Newsweek, 23 Apr. 2025
During the onion outbreak, oh my goodness, there were onions everywhere.
—Faris Tanyos, CBS News, 23 Apr. 2025
Thread chicken, pepperoncini peppers, and onion pieces onto skewers.
—Catherine Jessee, Southern Living, 22 Apr. 2025
Pair with an onion tart with white wine caramel sauce.
—Tom Mullen, Forbes.com, 21 Apr. 2025
See All Example Sentences for onion
Cite this Entry
“Onion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onion. Accessed 29 Apr. 2025.
Copy CitationKids Definition
onion
noun
on·ion
ˈən-yən 
: a widely grown Asian herb related to the lilies and having edible bulbs that have a sharp odor and taste and are used as a vegetable and to season foods
also
: its bulb
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