The Collaborative International Dictionary of English v.0.48:

Scalping \Scalp"ing\ (sk[a^]lp"[i^]ng),
   a. & n. from Scalp.
   [1913 Webster]

   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.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scalp \Scalp\, v. t. [imp. & p. p. Scalped; p. pr. & vb. n.
   Scalping.]
   1. To deprive of the scalp; to cut or tear the scalp from the
      head of.
      [1913 Webster]

   2. (Surg.) To remove the skin of.
      [1913 Webster]

            We must scalp the whole lid [of the eye]. --J. S.
                                                  Wells.
      [1913 Webster]

   3. (Milling) To brush the hairs or fuzz from, as wheat
      grains, in the process of high milling. --Knight.
      [1913 Webster]