noun buck·thorn \-ˌthrn\

Definition of BUCKTHORN

:  any of a genus (Rhamnus of the family Rhamnaceae, the buckthorn family) of often thorny trees or shrubs some of which yield purgatives or pigments
:  a shrub or small tree (Bumelia lycioides) of the sapodilla family of the southern United States

First Known Use of BUCKTHORN



noun buck·thorn \ˈbək-ˌth(ə)rn\   (Medical Dictionary)

Medical Definition of BUCKTHORN

:  a shrub or tree of the genus Rhamnus sometimes having thorny branches and often containing purgative principles in bark or sap and producing fruits sometimes used as a source of yellow and green dyes or pigments—see cascara buckthorn


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