cascara buckthorn cas·ca·ra·buckthorn uncommon noun 1. shrubby tree of the Pacific coast of the United States; yields cascara sagrada Synonymscascara buckthornbearberrybearwoodchittamwoodchittimwoodRhamnus purshianus Related words Broader terms buckthorn Part of cascara WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
