- any of a genus (Rhamnus) of thorny trees or shrubs of the buckthorn family, bearing small greenish flowers and purple berries
- any of a genus (Bumelia) of trees of the sapodilla family, native to the S U.S.
Origin: buck + thorn
Used by arrangement with John Wiley & Sons, Inc.
- Any of various shrubs or small trees of the genus Rhamnus, which includes several ornamentals and a few medicinal species such as the cascara buckthorn.
- See bumelia.
Origin: Translation of New Latin cervī spīna : cervī, genitive of cervus, deer, buck + spīna, thorn.