Leopard's Bane Definition

lĕpərdz

noun

Any of several perennial plants of the genus Doronicum in the composite family, native to Eurasia and widely cultivated for their yellow flower heads borne on long stalks.

American Heritage

Origin of Leopard's Bane

Translation of Latin pardalianches a kind of aconite or leopard's bane (said by Pliny the Elder to have been rubbed on meat in the belief that it would cause leopards that ate it to die from asphyxiation) from Greek pardaliankhes pardalis leopard -ankhes neuter of -ankhēs strangler, killer (from ankhein to strangle)

From American Heritage Dictionary of the English Language, 5th Edition