| Noun | 1. | leopardbane - any of several herbs of the genus Doronicum having alternate often clasping stem leaves cultivated for their long stalks of yellow flower heads Doronicum, genus Doronicum - genus of Eurasian perennial tuberous or rhizomatous herbs: leopard's bane herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests |