A Quick and Simple Dictionary

lock

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.  tuft or length of hair.
9. Verb.  (intransitive) To become fastened in place.
10. Verb.  (transitive) To fasten with a lock.
11. Verb.  (intransitive) To be capable of becoming fastened in place.
12. Verb.  (transitive) To intertwine or dovetail.
13. Verb.  (intransitive, break dancing) To freeze one's body or a part thereof in place.