onion

n. sharp-tasting edible bulb consisting of concentric fleshy layers (used much in cooking); any of various bulbous hollow-leaved plants which are cultivated for their sharp-tasting edible bulb

Many plants in the genus Allium are known by the common name onion but, used without qualifiers, it usually refers to Allium cepa. Allium cepa is also known as the 'garden onion' or 'bulb' onion and 'shallot'.
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.onion is a pseudo-top-level domain address suffix (similar in concept to such endings as .bitnet and .uucp used in earlier times) designating an anonymous hidden service reachable via the Tor network. Such addresses are not actual DNS names, and the .onion TLD is not in the Internet DNS root, but with the appropriate proxy software installed, Internet programs such as Web browsers can access sites with .onion addresses by sending the request through the network of Tor servers. The purpose of using such a system is to make both the information provider and the person accessing the information more difficult to trace, whether by one another, by an intermediate network host, or by an outsider.
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Noun
1. edible bulb of an onion plant
(hypernym) bulb
(part-holonym) onion plant, Allium cepa
2. bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
(synonym) onion plant, Allium cepa
(hypernym) alliaceous plant
(hyponym) shallot, eschalot, multiplier onion, Allium cepa aggregatum, Allium ascalonicum
(substance-meronym) isothiocyanate
3. an aromatic flavorful bulb
(hypernym) vegetable, veggie
(hyponym) Bermuda onion

(n.)
A liliaceous plant of the genus Allium (A. cepa), having a strong-flavored bulb and long hollow leaves; also, its bulbous root, much used as an article of food. The name is often extended to other species of the genus.
  

This product is mentioned only in (Numbers 11:5) as one of the good things of Egypt of which the Israel regretted the loss. Onions have been from time immemorial a favorite article of food among the Egyptians, The onions of Egypt are much milder in flavor and less pungent than those of this country.