regulator

definition: a control that maintains a steady speed in a machine (as by controlling the supply of fuel)
example:
speech part: noun
synonyms: governor
definition: any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
example:
speech part: noun
synonyms:
definition: an official responsible for control and supervision of a particular activity or area of public interest
example:
speech part: noun
synonyms:

regulator is explained and pronounced

How regulator is being used?