Definitions for: Regulator

[n] a control that maintains a steady speed in a machine (as by controlling the supply of fuel)
[n] any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
[n] a official responsible for control and supervision of a particular activity or area of public interest

Webster (1913) Definition: Reg"u*la`tor (-l?`t?r), n.
1. One who, or that which, regulates.

2. (Mach.) A contrivance for regulating and controlling
motion, as:
(a) The lever or index in a watch, which controls the
effective length of the hairspring, and thus regulates
the vibrations of the balance.
(b) The governor of a steam engine.
(c) A valve for controlling the admission of steam to the
steam chest, in a locomotive.

3. A clock, or other timepiece, used as a standard of correct
time. See Astronomical clock
(a), under Clock.

4. A member of a volunteer committee which, in default of the
lawful authority, undertakes to preserve order and prevent
crimes; also, sometimes, one of a band organized for the
comission of violent crimes. [U.S.]

A few stood neutral, or declared in favor of the
Regulators. --Bancroft.

Synonyms: governor

See Also: aperture, ball cock, ballcock, control, controller, draft, escape, escape cock, escape valve, faucet, floodgate, flywheel, functionary, head gate, official, peg, penstock, petcock, register, relief valve, safety valve, sluice valve, sluicegate, thermoregulator, thermostat, timer, water gate

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