Source : Webster's Revised Unabridged Dictionary (1913)

Crotch \Crotch\, n. (Billiards)
   In the three-ball carom game, a small space at each corner of
   the table. See {Crotched}, below.

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.]

Crotch \Crotch\ (kr?ch; 224), n.; pl. {Crotches} (-?z). [Cf.
   {Crotchet}, {Crutch}.]
   1. The angle formed by the parting of two legs or branches; a
      fork; the point where a trunk divides; as, the crotch of a
      tree.

   2. (Naut.) A stanchion or post of wood or iron, with two arms
      for supporting a boom, spare yards, etc.; -- called also
      {crane} and {crutch}. --Totten.

Source : WordNet®

crotch
     n 1: the angle formed by the inner sides of the legs where they
          join the human trunk [syn: {fork}]
     2: external sex organ [syn: {genitalia}, {genital organ}, {genitals},
         {private parts}, {privates}]