Answer: arrester

AnswerCrossword Clue
ARRESTER

Policeman, at times

ARRESTER

Restrainer.

ARRESTER

Detainer.

ARRESTER
Radio part.
ARRESTER
Policeman.
ARRESTERA policeman is one.
ARRESTERCop in action.
ARRESTERAnti-lightning device
ARRESTERLightning device
ARRESTERCop making a collar
ARRESTEROne who takes people in