[he-leb-uh-rin, hel-uh-bawr-in, -bohr-]
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 + -in2

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