Onion

The Israelites in the wilderness longed for the "onions and
garlick of Egypt" (Num. 11:5). This was the "betsel" of the
Hebrews, the Allium cepe of botanists, of which it is said that
there are some thirty or forty species now growing in Israel.
The onion is "the 'undivided' leek, "unio", "unus", one."