Source : Webster's Revised Unabridged Dictionary (1913)

Crotch \Crotch\, v. t. [imp. & p. p. {Crotched}; p. pr. & vb. n.
   {Crotch"ing}.]
   1. To provide with a crotch; to give the form of a crotch to;
      as, to crotch the ends of ropes in splicing or tying
      knots.

   2. (Logging) To notch (a log) on opposite sides to provide a
      grip for the dogs in hauling. [Western, U. S.]