GNU Collaborative International Dictionary of English

Found one definition

1.       
   ‖Sanguinaria , n. [NL. See Sanguinary, a. & n.]
    (Bot.) A genus of plants of the Poppy family.
   1913 Webster
   ☞ 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.
   1913 Webster
   The rootstock of the bloodroot, used in medicine as an emetic, etc.
   1913 Webster