What is "helleborus foetidus"

Setterwort \Set"ter*wort`\, n. (Bot.) The bear's-foot ( Helleborus f[oe]tidus); -- so called because the root was used in settering, or inserting setons into the dewlaps of cattle. Called also pegroots.
--Dr. Prior.

Bear's-foot \Bear's"-foot`\ (-f[oo^]t`), n. (Bot.) A species of hellebore ( Helleborus f[oe]tidus), with digitate leaves. It has an offensive smell and acrid taste, and is a powerful emetic, cathartic, and anthelmintic.

Helleborus foetidus, known variously as stinking hellebore , dungwort, setterwort and bear's foot, is a species of flowering plant in the buttercup family Ranunculaceae, native to the mountainous regions of Central and Southern Europe, Greece and Asia Minor. It is found wild in many parts of England, especially on limestone soil.