Source : Webster's Revised Unabridged Dictionary (1913)

Scalping \Scalp"ing\ (sk[a^]lp"[i^]ng),
   a. & n. from {Scalp}.

   {Scalping iron} (Surg.), an instrument used in scraping foul
      and carious bones; a raspatory.

   {Scalping knife}, a knife used by North American Indians in
      scalping.