LOCKS

noun

1. Something used for fastening, which can only be opened with a key or combination.
2. (by extension) A mutex or other token restricting access to a resource.
3. A segment of a canal or other waterway enclosed by gates, used for raising and lowering boats between levels.

verb

1. To become fastened in place.
2. To fasten with a lock.
3. To be capable of becoming fastened in place.

noun

1. A tuft or length of hair, wool etc.
2. A small quantity of straw etc.
3. A quantity of meal, the perquisite of a mill-servant.