1. (noun) lock
a fastener fitted to a door or drawer to keep it firmly closed
2. (noun) lock, curl, ringlet, whorl
a strand or cluster of hair
3. (noun) lock
a mechanism that detonates the charge of a gun
4. (noun) lock, lock chamber
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
5. (noun) lock, ignition lock
a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key
6. (verb) lock
any wrestling hold in which some part of the opponent's body is twisted or pressured
7. (verb) lock
fasten with a lock
"lock the bike to the fence"
8. (verb) engage, mesh, lock, operate
keep engaged
"engaged the gears"
9. (verb) lock
become rigid or immoveable
"The therapist noticed that the patient's knees tended to lock in this exercise"
10. (verb) lock, interlock, interlace
hold in a locking position
"He locked his hands around her neck"
11. (verb) interlock, lock
become engaged or intermeshed with one another
"They were locked in embrace"
12. (verb) lock
hold fast (in a certain state)
"He was locked in a laughing fit"
13. (verb) lock in, lock away, lock, put away, shut up, shut away, lock up
place in a place where something cannot be removed or someone cannot escape
"The parents locked her daughter up for the weekend"; "She locked her jewels in the safe"
14. (verb) lock
pass by means through a lock in a waterway
15. (verb) lock
build locks in order to facilitate the navigation of vessels
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Definition of 'LOCK' 
