(automotive) A device that allows the front brakes to lock independently of the rear brakes via a switch.

(mechanical engineering) A problem mostly affecting gasoline-fueled internal combustion engines, where the liquid fuel changes state from liquid to gas while still in the fuel delivery system, reducing the pump pressure and causing transient power loss or complete stalling.

Alternative form of vapor lock

(computing theory) The undesirable situation where multiple threads of equal priority contend repeatedly for the same lock.

plural of lock convoy

(Usually) one of a pair of gates at each end of a lock chamber on a canal, or river with a weir.

(firearms) A kind of lock for a gun in which a hammer strikes upon a percussion cap on the nipple, igniting the charge.

plural of locked fault

plural of lock stitch

An iron shoe placed on the rear wheel of a wagon to retard motion in going downhill.