Source : Webster's Revised Unabridged Dictionary (1913)

Shrub \Shrub\, n. [OE. schrob, AS. scrob, scrobb; akin to Norw.
   skrubba the dwarf cornel tree.] (Bot.)
   A woody plant of less size than a tree, and usually with
   several stems from the same root.

Shrub \Shrub\, v. t.
   To lop; to prune. [Obs.] --Anderson (1573).

Shrub \Shrub\, n. [Ar. shirb, shurb, a drink, beverage, fr.
   shariba to drink. Cf. {Sirup}, {Sherbet}.]
   A liquor composed of vegetable acid, especially lemon juice,
   and sugar, with spirit to preserve it.

Source : WordNet®

shrub
     n : a low woody perennial plant usually having several major
         branches [syn: {bush}]