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3 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Rham·nus n.  Bot. A genus of shrubs and small trees; buckthorn. The California Rhamnus Purshianus and the European Rhamnus catharticus are used in medicine. The latter is used for hedges.
 

From: Webster's Revised Unabridged Dictionary (1913)

 Cas·ca·ra sa·gra·da  Holy bark; the bark of the California buckthorn (Rhamnus Purshianus), used as a mild cathartic or laxative; -- called also cascara.
 

From: WordNet (r) 2.0

 Rhamnus purshianus
      n : shrubby tree of the Pacific coast of the United States;
          yields cascara sagrada [syn: cascara buckthorn, bearberry,
           bearwood, chittamwood, chittimwood]