Lock

Look up lock or locks in Wiktionary, the free dictionary.

Lock may refer to:

Common meanings

Lock (security device), a mechanical device used to secure items of importance.
Lock of hair, a tuft or small bundle of hair
Lock (water transport), a device for boats to transit between different levels of water
Lock (weapons guidance), missile navigation system's target acquisition fix
Lock (firearm), the ignition mechanism of small arms
Lock (rugby league), a player position in rugby league
Lock (rugby union), a player position in rugby union
Fermentation lock, a device in beer and wine making that allows carbon dioxide to escape while not allowing air to enter
Lock, a number of grappling holds in wrestling, judo and other martial arts, e.g. armlock, leglock
Rope lock, a device used in theater fly systems
Lock (Waltz), a dance figure

File locking, describes a mechanism that restricts access to a computer file
Lock (computer science), a bookkeeping object used to serialize concurrent access
Lock (database), a feature used when multiple users access a database concurrently
SIM lock, a restriction on mobile phones to work only in certain countries or with certain providers

Lock (surname)
Ormer Locklear (1891–1920), American stunt pilot and film actor nicknamed "Lock"
Lock Martin (1916–1959), stage name of American actor Joseph Lockard Martin, Jr., best known for playing the robot Gort in the film The Day the Earth Stood Still

Lock (Saga of the Skolian Empire), a sentient machine in the novels by Catherine Asaro