The Collaborative International Dictionary of English v.0.48:

Puccoon \Puc*coon"\, n. [From the American Indian name.] (Bot.)
   Any one of several plants yielding a red pigment which is
   used by the North American Indians, as the bloodroot and two
   species of Lithospermum (Lithospermum hirtum, and
   Lithospermum canescens); also, the pigment itself.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bloodroot \Blood"root`\, n. (Bot.)
   A plant (Sanguinaria Canadensis), with a red root and red
   sap, and bearing a pretty, white flower in early spring; --
   called also puccoon, redroot, bloodwort, tetterwort,
   turmeric, and Indian paint. It has acrid emetic
   properties, and the rootstock is used as a stimulant
   expectorant. See Sanguinaria.
   [1913 Webster]

   Note: In England the name is given to the tormentil, once
         used as a remedy for dysentery.
         [1913 Webster]

WordNet (r) 3.0 (2006):

puccoon
    n 1: perennial plant of eastern North America having hairy
         foliage yielding a red or yellow pigment [syn: puccoon,
         Lithospermum caroliniense]
    2: perennial woodland native of North America having a red root
       and red sap and bearing a solitary lobed leaf and white
       flower in early spring and having acrid emetic properties;
       rootstock used as a stimulant and expectorant [syn:
       bloodroot, puccoon, redroot, tetterwort, Sanguinaria
       canadensis]