Webster's Revised Unabridged Dictionary · 1913

Sanguinaria

Sanguinaria , noun

[New Latin See Sanguinary, a. & n.]

1.
(Botany) A genus of plants of the Poppy family.

Sanguinaria Canadensis, or bloodroot, is the only species. It has a perennial rootstock, which sends up a few roundish lobed leaves and solitary white blossoms in early spring. See Bloodroot.

2.
The rootstock of the bloodroot, used in medicine as an emetic, etc.