Source : Webster's Revised Unabridged Dictionary (1913)

Whin \Whin\, n. [W. chwyn weeds, a single weed.]
   1. (Bot.)
      (a) Gorse; furze. See {Furze}.

                Through the whins, and by the cairn. --Burns.
      (b) Woad-waxed. --Gray.

   2. Same as {Whinstone}. [Prov. Eng.]

   {Moor whin} or {Petty whin} (Bot.), a low prickly shrub
      ({Genista Anglica}) common in Western Europe.

   {Whin bruiser}, a machine for cutting and bruising whin, or
      furze, to feed cattle on.

   {Whin Sparrow} (Zo["o]l.), the hedge sparrow. [Prov. Eng.]

   {Whin Thrush} (Zo["o]l.), the redwing. [Prov. Eng.]

Source : WordNet®

whin
     n 1: very spiny and dense evergreen shrub with fragrant
          golden-yellow flowers; common throughout western Europe
          [syn: {gorse}, {furze}, {Irish gorse}, {Ulex europaeus}]
     2: small Eurasian shrub having clusters of yellow flowers that
        yield a dye; common as weed in England and United States;
        sometimes grown as an ornamental [syn: {woodwaxen}, {dyer's
        greenweed}, {dyer's-broom}, {dyeweed}, {greenweed}, {woadwaxen},
         {Genista tinctoria}]
     3: any of various hard colored rocks (especially rocks
        consisting of chert or basalt) [syn: {whinstone}]