To disable by cutting a leg muscle.

And the LORD said unto Joshua, Be not afraid because of them: for to morrow about this time will I deliver them up all slain before Israel: thou shalt HOCK their horses, and burn their chariots with fire. ( Joshua 11:6 )

Source: A King James Dictionary. (Used with permission. Copyright © Philip P. Kapusta)

Bibliography Information

"Entry for 'Hock'". A King James Dictionary.