inspector
US /ɪnˈspek.tɚ/
UK /ɪnˈspek.tɚ/

1.
an official who examines things to ensure that regulations, standards, or laws are being met
:
•
The health inspector visited the restaurant.
•
A building inspector checked the new construction.
2.
a police officer of a rank above sergeant and below chief inspector
:
•
Detective Inspector Morse solved the complex case.
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She was promoted to inspector last year.