Buckthorn

Black berries on a branch with leaves, on thorn bush in the family Rhamnaceae

Rhamnus cathartica

Synonyms:
Purging Buckthorn
Buckthorn (Wiktionary)

English

Etymology

buck +‎ thorn

Noun

buckthorn (plural buckthorns)

  1. Any of several, often thorny shrubs or small trees, especially
    1. the family Rhamnaceae, the buckthorn family,
      1. especially genus Rhamnus,
        1. especially the common buckthorn or purging buckthorn; Rhamnus cathartica.
      2. also genus Frangula, especially Frangula alnus, the alder buckthorn.
    2. Hippophae, the sea buckthorn.

Derived terms

  • alder buckthorn - Frangula alnus ( <= Rhamnus frangula), Frangula caroliniana ( <= Rhamnus caroliniana)
  • alderleaf buckthorn - Rhamnus alnifolia
  • buckthorn bully - Sideroxylon lycioides
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