From The Collaborative International Dictionary of English v.0.48 :
cascara \cascara\ n.
the dried bark of the cascara buckthorn used as a laxative;
-- called also cascara sagrada.
Syn: chittam bark, chittem bark.
[WordNet 1.5]
From The Collaborative International Dictionary of English v.0.48 :
Cascara sagrada \Cas"ca*ra sa*gra"da\ (k[.a]s"k[.a]*r[.a]
s[.a]*gr[aum]"d[.a]). [Sp.]
Holy bark; the bark of the California buckthorn ({Rhamnus
Purshianus), used as a mild cathartic or laxative; -- called
also cascara.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
cascara
n 1: dried bark of the cascara buckthorn used as a laxative
[syn: cascara, cascara sagrada, chittam bark,
chittem bark]