- cascara buckthorn, bearberry, bearwood, chittamwood, chittimwood, Rhamnus purshianus - shrubby tree of the Pacific coast of the United States; yields cascara sagrada
--1 is a kind of buckthorn
--1 has parts: cascara, cascara sagrada, chittam bark, chittem bark - false buckthorn, chittamwood, chittimwood, shittimwood, black haw, Bumelia lanuginosa - deciduous tree of southeastern United States and Mexico
--2 is a kind of buckthorn