What is the meaning of lock?

noun

• A fastener fitted to a door or drawer to keep it firmly closed.
• A strand or cluster of hair.
  • synonyms: curl, ringlet, whorl
• A mechanism that detonates the charge of a gun.
• Enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it.
  • synonyms: lock chamber
• A restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key.
  • synonyms: ignition lock
• Any wrestling hold in which some part of the opponent's body is twisted or pressured.

verb

• Fasten with a lock.
  • usage: "lock the bike to the fence"
• Keep engaged.
  • usage: "engaged the gears"
  • synonyms: engage, mesh, operate
• Become rigid or immoveable.
  • usage: "The therapist noticed that the patient's knees tended to lock in this exercise"
• Hold in a locking position.
  • usage: "He locked his hands around her neck"
  • synonyms: interlock, interlace
• Become engaged or intermeshed with one another.
  • usage: "They were locked in embrace"
  • synonyms: interlock
• Hold fast (in a certain state. )
  • usage: "He was locked in a laughing fit"
• Place in a place where something cannot be removed or someone cannot escape.
  • usage: "The parents locked her daughter up for the weekend"; "She locked her jewels in the safe"
  • synonyms: lock in, lock away, put away, shut up, shut away, lock up
• Pass by means through a lock in a waterway.
• Build locks in order to facilitate the navigation of vessels. .