Source : Webster's Revised Unabridged Dictionary (1913)

Styrax \Sty"rax\, n. [L. styrax, storax, Gr. ?. See {Storax}.]
   1. (Bot.) A genus of shrubs and trees, mostly American or
      Asiatic, abounding in resinous and aromatic substances.
      {Styrax officinalis} yields storax, and {S. Benzoin}
      yields benzoin.

   2. Same as {Storax}.

Source : WordNet®

styrax
     n : any shrub or small tree of the genus Styrax having fragrant
         bell-shaped flowers that hang below the dark green
         foliage