The Collaborative International Dictionary of English v.0.48:

papooseroot \papooseroot\, papoose root \papoose root\n. (Bot.)
   A tall herb (Caulophyllum thalictroides) of eastern North
   America and Asia having blue berrylike fruit and a thick
   knotty rootstock formerly used medicinally; the Cohosh. See
   also Cohosh.

   Syn: blue cohosh, blueberry root, papoose root, squawroot,
        squaw root, Caulophyllum thalictrioides, Caulophyllum
        thalictroides.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

papooseroot
    n 1: tall herb of eastern North America and Asia having blue
         berrylike fruit and a thick knotty rootstock formerly used
         medicinally [syn: blue cohosh, blueberry root,
         papooseroot, papoose root, squawroot, squaw root,
         Caulophyllum thalictrioides, Caulophyllum
         thalictroides]