Green’s Dictionary of Slang

hock v.3

[? hock n.1 ; cite 1832 may refer to butchery j. hock, ‘To make an incision in one hind leg of a hare or rabbit, so that the other leg may be passed through it, for the purpose of suspension’ (EDD)]

(Aus./US) to kick.

Show quotations
Tasmanian (Hobart, Tas.) 20 July 230/2: William Young, a butcher [...] who being rather aggrieved at Constable Kenehau's interference in the discharge of his duty, threatened in the true butcher's slang, ‘to hock him,’ to which the Constable objected.
V.C. Strasburger Rounding Third 109: A guy gets hocked in the jock, and then stuffs a guy in on the rebound [HDAS].