Helleborin
Pronunciation : Hel*leb"o*rin ( or )
Part of Speech : n.
Definition : Defn: 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.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913