Regulator
WordNet
noun
(1) A control that maintains a steady speed in a machine (as by controlling the supply of fuel)
(2) Any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
(3) A official responsible for control and supervision of a particular activity or area of public interest
WiktionaryText
Noun
- A device that controls or limits something.
- The voltage regulator stopped working and the resulting overload destroyed the device.
- A person or group that sets standards of practice, especially those established by law.
- A very accurate clock, used by clockmakers to measure the timekeeping of each newly made clock.