A North American plant, Sanguinaria canadensis, of the poppy family, which has a red root and sap and a single white flower in early spring.
The red pigment (dye) obtained from these plants.
Any one of several plants yielding a red pigment which is used by the North American Indians, such as the bloodroot and two species of Lithospermum, Lithospermum hirtum and Lithospermum canescens.