noun
1. : a tropical Old World aromatic plant ( Zingiber zerumbet ) related to and resembling common ginger
2.
a. : a No. American perennial herb ( Asarum canadense ) with kidney-shaped to cordate leaves, purplish brown flowers, and a pungent creeping rhizome — called also black snakeroot, Canada ginger
b. : any of various other plants of the genus Asarum — see heartleaf
3. : an Australian perennial plant ( Alpinia coerulea ) related to the common ginger