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]