Source : Webster's Revised Unabridged Dictionary (1913)

Nipper \Nip"per\, n.
   1. One who, or that which, nips.

   2. A fore tooth of a horse. The nippers are four in number.

   3. A satirist. [Obs.] --Ascham.

   4. A pickpocket; a young or petty thief. [Old Cant]

   5. (Zo["o]l.)
      (a) The cunner.
      (b) A European crab ({Polybius Henslowii}).