1. [noun] Something used for fastening, which can only be opened with a key or combination.
2. [noun] (computing) (by extension) A mutex or other token restricting access to a resource.
3. [noun] A segment of a canal or other waterway enclosed by gates, used for raising and lowering boats between levels.
4. [noun] The firing mechanism of a gun.
5. [noun] Complete control over a situation.
6. [noun] Something sure to be a success.
7. [noun] (rugby) A player in the scrum behind the front row, usually the tallest members of the team.
8. [noun] A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable.
9. [noun] A place from which egress is prevented, as by a lock.
10. [noun] A device for keeping a wheel from turning.
11. [noun] A grapple in wrestling.
12. [verb] (intransitive) To become fastened in place.
13. [verb] (transitive) To fasten with a lock.
14. [verb] (intransitive) To be capable of becoming fastened in place.
15. [verb] (transitive) To intertwine or dovetail.
16. [verb] (intransitive) (break dancing) To freeze one's body or a part thereof in place.
17. [verb] To furnish (a canal) with locks.
18. [verb] To raise or lower (a boat) in a lock.
19. [noun] Tuft or length of hair
20. [noun] A fastener fitted to a door or drawer to keep it firmly closed.
21. [noun] A strand or cluster of hair.
22. [noun] A mechanism that detonates the charge of a gun.
23. [noun] 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.
24. [noun] A restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key.
25. [noun] Any wrestling hold in which some part of the opponent's body is twisted or pressured.
26. [verb] Fasten with a lock; 'lock the bike to the fence'.
27. [verb] Keep engaged; 'engaged the gears'.
28. [verb] Become rigid or immoveable; 'The therapist noticed that the patient's knees tended to lock in this exercise'.
29. [verb] Hold in a locking position; 'He locked his hands around her neck'.
30. [verb] Become engaged or intermeshed with one another; 'They were locked in embrace'.
31. [verb] Hold fast (in a certain state); 'He was locked in a laughing fit'.
32. [verb] 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'.
33. [verb] Pass by means through a lock in a waterway.
34. [verb] Build locks in order to facilitate the navigation of vessels.
