'Sea buckthorn' definitions:

Definition of 'Sea buckthorn'

From: GCIDE
  • 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]