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|Noun||1.||onion plant - bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb|
alliaceous plant - bulbous plants having a characteristic pungent onion odor
onion - the bulb of an onion plant
Allium ascalonicum, Allium cepa aggregatum, eschalot, multiplier onion, shallot - type of onion plant producing small clustered mild-flavored bulbs used as seasoning
Allium cepa viviparum, Egyptian onion, top onion, tree onion - type of perennial onion grown chiefly as a curiosity or for early salad onions; having bulbils that replace the flowers
Allium fistulosum, Japanese leek, Welsh onion - Asiatic onion with slender bulbs; used as early green onions
isothiocyanate - a family of compounds derived from horseradish and radishes and onions and mustards; source of the hotness of those plants and preparations
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