/he leb"euh rin, hel"euh bawr'in, -bohr'-/ , n.
a colorless, crystalline, water-insoluble, poisonous solid, C 28 H 36 O 6 , obtained from the rhizome and root of certain hellebores, and used in medicine chiefly as a purgative.
[ 1870-75; HELLEBORE + -IN 2 ]