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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
  1. adj. of or pertaining to the botanical genus Allium; "onions, leeks, garlic, chives are alliceaous plants"

  2. smelling of onions or garlic