Definition of winter onion
: any of several garden onions that persist from year to year, usually form small bulbs, and are used chiefly for early salad onions
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up winter onion? Please tell us where you read or heard it (including the quote, if possible).