[1] : The Collaborative International Dictionary of English v.0.48

allium \al"lium\, n. l., garlic. bot.
   a genus of plants, including the onion, garlic, leek, chive,
   etc.
   1913 webster

[2] : WordNet (r) 2.0

allium
     n : large genus of perennial and biennial pungent bulbous
         plants: garlic; leek; onion; chive; sometimes placed in
         family alliaceae as the type genus syn: genus allium
see also:
genus allium 

Allium >> A Words
Allium, definition of term: Allium
allium_pag1.html

Allium Cepa >> A Words
Allium Cepa, definition of term: Allium Cepa
allium+cepa_pag1.html