1. Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened.
2. A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable.
"Albemarle Street closed by a lock of carriages." -- De Quincey.
3. A place from which egress is prevented, as by a lock. Dryden.
4. The barrier or works which confine the water of a stream or canal.
5. An inclosure in a canal with gates at each end, used in raising or lowering boats as they pass from one level to another; -- called also lift lock.
6. That part or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc.
7. A device for keeping a wheel from turning.
8. A grapple in wrestling. Milton.
a lock containing a contrivance for showing whether it as has been tampered with.
(Canals), the body of water in a lock chamber.
the inclosed space between the gates of a canal lock.
See Check nut, under Check.
a plate to which the mechanism of a gunlock is attached.
(Arch.), in ordinary paneled doors, the rail nearest the lock. Lock rand
(Masonry), a range of bond stone. Knight.
a door lock inserted in a mortise.
a lock fastened to the face of a door, thus differing from a mortise lock.