The Collaborative International Dictionary of English v.0.48:

Cheliform \Chel"i*form\, a. [Gr. chhlh` claw + -form.] (Zool.)
   Having a movable joint or finger closing against a preceding
   joint or a projecting part of it, so that the whole may be
   used for grasping, as the claw of a crab; pincherlike.
   [1913 Webster]