Easton's Bible Dictionary (1897)
, 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.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
HOUGH (pronounced hok), to disable by cutting the sinews of the ham (hamstring), Josh 11:6, Josh 11:9.