n. (Chem.) A poisonous glucoside found in several species of hellebore, and extracted as a white crystalline substance with a sharp tingling taste. It possesses the essential virtues of the plant; -- called also elleborin. [ 1913 Webster ]
(n)any of several small temperate and tropical orchids having mottled or striped leaves and spikes of small yellowish-white flowers in a twisted raceme, Syn.helleborine
(n)orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf, Syn.chatterbox, giant helleborine, Epipactis gigantea