Any of several plants in the family Araceae, including the North American species Arisaema dracontium and the Asian genus Pinellia.
A tincture of cannabis, typically made by soaking the flowers, leaves, or stems in ethyl alcohol.
Used other than figuratively or idiomatically: see green, dragon.
Jimsonweed (Datura stramonium).
Tree of heaven (Ailanthus altissima).
Any other noxious plant.