alliaceous adj 1: of or pertaining to the botanical genus Allium; "onions, leeks, garlic, chives are alliaceous plants" 2: smelling of onions or garlic
Alliaceous \Al`li*a"ceous\, a. Of or pertaining to the genus {Allium}, or garlic, onions, leeks, etc.; having the smell or taste of garlic or onions. [1913 Webster]