The Collaborative International Dictionary
Alliaceous
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.
Wiktionary
alliaceous
a. Smelling or tasting of garlic or onion.
WordNet
alliaceous
adj. of or pertaining to the botanical genus Allium; "onions, leeks, garlic, chives are alliceaous plants"
smelling of onions or garlic