The Collaborative International Dictionary of English v.0.48:

Raptor \Rap"tor\ (r[a^]p"t[~e]r), n. [L. raptor, from rapere to
   ravish. See Rapid.]
   A ravisher; a plunderer. [Obs.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

raptor
    n 1: any of numerous carnivorous birds that hunt and kill other
         animals [syn: bird of prey, raptor, raptorial bird]