rhamnus

from WordNet (r) 3.0 (2006)

Rhamnus
    n 1: type genus of the Rhamnaceae: buckthorns [syn: {Rhamnus},
         {genus Rhamnus}]

from The Collaborative International Dictionary of English v.0.48

Rhamnus \Rham"nus\, n. [NL., from Gr. "ra`mnos a kind of prickly
   shrub; cf. L. rhamnos.] (Bot.)
   A genus of shrubs and small trees; buckthorn. The California
   {Rhamnus Purshianus} and the European {Rhamnus catharticus}
   are used in medicine. The latter is used for hedges.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Buckthorn \Buck"thorn`\, n. (Bot.)
   A genus ({Rhamnus}) of shrubs or trees. The shorter branches
   of some species terminate in long spines or thorns. See
   {Rhamnus}.
   [1913 Webster]

   {Sea buckthorn}, a plant of the genus {Hippopha["e]}.
      [1913 Webster]

[email protected]