constable (constables plural )
1 n-count; n-title; n-voc In Britain and some other countries, a constable is a police officer of the lowest rank.
He was a constable at Sutton police station., ...Constable Stuart Clark..., Thanks for your help, Constable.
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Chief Constable
2 n-count; n-title In the United States, a constable is an official who helps keep the peace in a town. They are lower in rank than a sheriff.
Chief Constable (Chief Constables plural )A Chief Constable is the officer who is in charge of the police force in a particular county or area in Britain. n-count; n-title
police constable (police constables plural )A police constable is a policeman or policewoman of the lowest rank.
(BRIT) n-count; n-title
A police constable is handling all inquiries., ...Police Constable David Casey.
in AM, use police officer