The Collaborative International Dictionary of English v.0.48:

Hock \Hock\, Hough \Hough\, n. [ AS. h?h the heel; prob. akin to
   Icel. h[=a]sinn hock sinew, Dan. hasc, G. hechse, h[aum]chse,
   LG. hacke, D. hak; also to L. coxa hip (cf. Cuisses), Skr.
   kaksha armpit. [root]12. Cf. Heel.]
   1.
      (a) The joint in the hind limb of quadrupeds between the
          leg and shank, or tibia and tarsus, and corresponding
          to the ankle in man.
      (b) A piece cut by butchers, esp. in pork, from either the
          front or hind leg, just above the foot.
          [1913 Webster]

   2. The popliteal space; the ham.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hough \Hough\, n.
   Same as Hock, a joint.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hough \Hough\, v. t. [imp. & p. p. Houghed; p. pr. & vb. n.
   Houghing.]
   Same as Hock, to hamstring.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hough \Hough\, n. [Cf. D. hak. Cf. Hack.]
   An adz; a hoe. [Obs.] --Bp. Stillingfleet.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hough \Hough\, v. t.
   To cut with a hoe. [Obs.] --Johnson.
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Hough
   to hamstring, i.e., sever the "tendon of Achilles" of the hinder
   legs of captured horses (Josh. 11:6; 2 Sam. 8:4; 1 Chr. 18:4),
   so as to render them useless.