any of several, sometimes thorny trees or shrubs belonging to the genus Rhamnus, especially R. frangula, the bark of which is used in medicine.Compare buckthorn family.
a tree or shrub belonging to the genus Bumelia, of the sapodilla family, especially B. lycioides, a thorny tree having elliptic leaves and large clusters of white flowers, common in the southern and part of the central U.S.
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"She's too stylish to be good for much," being the excellent Mrs. Buckthorn's severe corollary.
Rhamnus, ram′nus, n. a genus of polypetalous shrubs and trees, including the buckthorn.
I gave him a dose of syrup of buckthorn, and put him on a diet of pot-liquor and vegetables till further orders.
Jacinto Quesada drew back from the entangled buckthorn and genista.
A very fugitive pigment, prepared from the juice of buckthorn berries.