papooseroot

from The Century Dictionary.

• noun The blue cohosh, Caulophyllum thalietroides. Its root is said by some to be an emmenagogue.

from the GNU version of the Collaborative International Dictionary of English.

• noun (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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally
• noun tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally