The Collaborative International Dictionary of English v.0.48:

Carnify \Car"ni*fy\, v. i. [LL. carnificare, fr. L. caro,
   carnis, flesh + facere to make: cf. F. carnifier.]
   To form flesh; to become like flesh. --Sir M. Hale.
   [1913 Webster]

WordNet (r) 3.0 (2006):

carnify
    v 1: become muscular or fleshy