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English definition of “officer”

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officer

noun [C] uk   /ˈɒf.ɪ.sər/ us    /ˈɑː.fɪ.sɚ/
B2 a person in the armed forces who has a position of authority: a naval officer a top-ranking officerB1 a person who has a position of authority in an organization: a careers/customs/personnel officerB1 a member of the police force: There was an incident in the High Street and two of our officers attended the scene. Officer Clarke [as form of address] "Were you aware of the speed you were driving at, madam?" "No, officer."
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(Definition of officer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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