any of various plants belonging to the genus Veratrum, of the lily family, esp. a North American species, V. viride, which has clusters of yellowish-green flowers and is the source of substances used in certain medicines and insecticides.
Main Entry: false hellebore Function: noun : any of several hellebores of the genus Veratrum; especially: one (V. viride) of the easternU.S. with dense spikelike flower clusters and a rootstock that has been used medicinally —see AMERICAN HELLEBORE
