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onion

on·ion [ únnyən ] (plural on·ions)


noun 
Definition:
 
1. edible bulb used as vegetable: a rounded edible bulb with hard pungent flesh in concentric layers beneath a flaky brown skin eaten raw or cooked as a vegetable

2. plant with pungent bulbs: a plant of the lily family that produces onions. Native to: Asia.  Latin name Allium cepa.

3. plant related to onion: any plant related to the onion, e.g. the Welsh onion

[12th century. < Latin union- "onion"]

on·ion·y adjective
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