/koh"hosh, koh hosh"/ , n.
either of two unrelated plants of the eastern U.S., Cimicifuga racemosa (black cohosh) , of the buttercup family, or Caulophyllum thalictroides (blue cohosh) , of the barberry family, both used medicinally.
[ 1790-1800, Amer.; kk w àhas ]