(firearms) A lock in which the hammer rebounds to half cock after striking the cap or primer.

A lock that closes or secures itself by means of a spring.

A device for firing a cannon by a percussion primer.

A lock enclosed in a wooden case and attached to the face of a door.

tide lock

(astronomy) Alternative form of tidal locking / A sealock.

(wrestling) A lock in which a close grip is obtained and a fall attempted by a heave over the hip.

The inner groove on a vinyl record in the form of a closed loop, which traps the tonearm and needle, preventing it from entering the label area.

plural of locked groove

plural of combination lock