police officerpoˈlice ˌofficer ●●● S3 W2 noun [countable] 
Examples
ExamplesEXAMPLES FROM THE CORPUS
Thesaurus- It depends on the police officer.
- It eventually dawned on me that the young moran and the police officer had known all along where we were.
- Just before their last concert, a police officer arrives with a strange message for them.
- There is particular concern that an informant may try to set police officer against police officer and force against force.
THESAURUSpeople in the police► police officer
a member of the police (also officer) a member of the police. In British English, police officer is used especially in more formal contexts, for example in news reports. In everyday English, British people still usually say policeman or policewoman: · a senior police officer· He was sentenced to life in prison for killing a police officer.· He is the officer in charge of the case.· Officer Fayard (=in the US ‘Officer’ is used in the title of police officers)
► policeman a man who is a member of the police: · an off-duty policeman· He’s a former policeman.
► policewoman a woman who is a member of the police: · The girl, accompanied by a policewoman and two social workers, was seen in private by Sheriff George Crozier.
► PC/WPC abbreviation used in the job titles of British police officers. PC means ‘Police Constable’ and WPC means ‘Woman Police Constable’: · PC Keith Fletcher· WPC Susan Larkin
► detective a police officer whose job is to discover who is responsible for crimes: · Detectives are investigating the death of a baby boy.· Detective Inspector John Hartwell
► plain-clothes adjective a plain-clothes police officer wears ordinary clothes instead of a uniform: · Two plain-clothes police officers, acting as hotel security men, kept watch on him.
► constable a British police officer of the lowest rank: · a police constable· Constable Robin Cameron
► chief constable a senior police officer who is in charge of the police in a particular area in Britain: · the chief constable of North Yorkshire police
► cop informal a police officer: · You’d better call the cops.
► trooper a US police officer in a state police force: · a New Jersey state trooper
WORD SETS► Policeagent, nounbaton, nounbeat, nounbobby, nounbody armour, nounbody search, nounbook, verbchief constable, nounchief inspector, nounchief superintendent, nounCID, the, commander, nouncommissioner, nouncomposite, nounconstable, nounconstabulary, nouncop, nouncopper, nouncop shop, nouncruiser, noundetective, noundragnet, nounFBI, the, flying squad, nounFraud Squad, nounfrisk, verbgendarme, nounguard dog, nounhighway patrol, nounhomicide, nouninformant, nouninspector, nounInterpol, nouninvestigation, nounlaw enforcement agent, nounlawman, nounmanor, nounMetropolitan Police, the, MI5, nounmissing person, nounMountie, nounmugshot, nounnab, verbnail, verbnarc, nounnark, nounnick, verbnightstick, nounofficer, nounoperation, nounpaddy wagon, nounPanda car, nounpatrol, nounpatrol car, nounpatrolman, nounpig, nounplain-clothes, adjectiveplastic bullet, nounpolice constable, nounpolice department, nounpolice dog, nounpolice force, nounpoliceman, nounpolice officer, nounpolice station, nounpolicewoman, nounprecinct, nounquell, verbquestion, verbradar trap, nounraid, nounraid, verbrank, nounrap sheet, nounriot police, nounroadblock, nounScotland Yard, search warrant, nounsheriff, nounshield, nounsnout, nounspecial agent, nounSpecial Branch, nounspecial constable, nounsquad, nounsquad car, nounstate trooper, nounstation house, nounstore detective, nounsupergrass, nounsuperintendent, nountraffic cop, nountrooper, nountruncheon, nounwarrant, nounwater cannon, nounWPC, noun