regulator

Meanings

1. 1
   noun

   A person or group that sets standards of practice, especially regulatory law as sanctioned by statutory law.

   […]in part because a key county reservoir had to been^([sic]) drained to reduce earthquake risks highlighted by federal regulators.

2. 2
   noun

   A device that controls the supply of steam to the cylinders of a steam locomotive.

   Driver G. A. Rowett, of the North Eastern Region's Neville Hill shed, now joined the locomotive as pilotman, and actually took over the regulator, Fireman Wheddon continuing to fire.

3. 3
   noun

   a control that maintains a steady speed in a machine (as by controlling the supply of fuel)

4. 4
   noun

   any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.

5. 5
   noun

   an official responsible for control and supervision of a particular activity or area of public interest

6. 6
   noun

   A device that controls or limits something.

7. 7
   noun

   A very accurate clock, used by clockmakers to measure the timekeeping of each newly made clock.

8. 8
   noun

   A gene involved in controlling the expression of one or more other genes.

Etymology

From regulate + -or.