bear's-foot

from The Century Dictionary.

• noun A stout composite plant, Polymnia Uvedalia; or, especially, its root, vaguely claimed to be an alterative.
• noun A plant of the genus Helleborus, H. fœtidus. See Helleborus.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Bot.) A species of hellebore (Helleborus fœtidus), with digitate leaves. It has an offensive smell and acrid taste, and is a powerful emetic, cathartic, and anthelmintic.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A species of hellebore (Helleborus foetidus), with digitate leaves and an offensive smell. It is a powerful emetic, cathartic, and anthelmintic.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally