onion(redirected from know onions)
Also found in: Thesaurus, Medical, Idioms, Encyclopedia.
a. A bulbous plant (Allium cepa) cultivated worldwide as a vegetable.
b. The rounded edible bulb of this plant, composed of fleshy, tight, concentric leaf bases having a pungent odor and taste.
2. Any of several other plants in the genus Allium.
[Middle English oynoun, unyon, from Anglo-Norman oignon, ongnon, from Vulgar Latin *uniō, uniōn-, variant of Latin ūniō, ūniōn- length of the initial u uncertain), perhaps from ūnus, one (in reference to the single compact bulb of the onion, as opposed to the multiple cloves of garlic); see oi-no in Indo-European roots, or perhaps akin to Sanskrit uṣnaḥ, onion, Pashto ūʐa;, garlic, and Hittite wašḫar, -wašḫan- in šuppiwašḫar, onion (šuppi-, pure).]
1. (Plants) an alliaceous plant, Allium cepa, having greenish-white flowers: cultivated for its rounded edible bulb
2. (Plants) the bulb of this plant, consisting of concentric layers of white succulent leaf bases with a pungent odour and taste
3. (Plants) any of several related plants similar to A. cepa, such as A. fistulosum (Welsh onion)
4. know one's onions slang Brit to be fully acquainted with a subject
[C14: via Anglo-Norman from Old French oignon, from Latin unio onion, related to union]
1. a plant, Allium cepa, of the amaryllis family, having an edible, succulent, pungent bulb.
2. this bulb.
3. any of certain similar plants.
[1325–75; Middle English < Old French oignon < Latin ūniōnem, acc. of ūniō a unity, large pearl, onion; see union]
Switch to new thesaurus
|Noun||1.||onion - the bulb of an onion plant |
Allium cepa, onion plant, onion - bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
bulb - a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
|2.||onion - 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
|3.||onion - an aromatic flavorful vegetable|
veg, vegetable, veggie - edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant
Bermuda onion - mild flat onion grown in warm areas
Vidalia onion - sweet-flavored onion grown in Georgia
Spanish onion - large mild and succulent onion; often eaten raw
shallot - small mild-flavored onion-like or garlic-like clustered bulbs used for seasoning
onion[ˈʌnjən] n → cipolla
a type of vegetable with an eatable bulb which has a strong taste and smell. pickled onions; Put plenty of onion in the stew. ui بَصَل лук cebola cibule die Zwiebel løg κρεμμύδιcebolla sibul پیاز sipuli oignonבצל प्याज luk (vörös)hagyma bawang laukur cipolla 玉ねぎ 양파 svogūnas sīpols bawang uiløkcebula پياز cebola ceapă лук cibuľa čebula crni luk lök หัวหอม soğan 洋蔥 цибуля, цибулина پياز củ hành 洋葱