• Holy bark; the bark of the California buckthorn (Rhamnus Purshianus), used as a mild cathartic or laxative.
(Spanish: `sacred bark`), the dried bark of the buckthorn Rhamnus purshiana (order Rhamnales) used in medicine as a laxative. The tree is cultivated ... [1 related articles]
The dried bark of Rhamnus purshiana (family Rhamnaceae); used as a laxative. ... Synonym: cascara. ... (05 Mar 2000) ... 
Cas'ca·ra sa·gra'da [ Spanish ] Holy bark; the bark of the California buckthorn ( Rhamnus Purshianus ), used as a mild cathartic or laxative. 
Type: Term Definitions: 1. the dried bark of Rhamnus purshiana (family Rhamnaceae); used as a laxative. Synonyms: cascara