Definition of sergeant noun from the Oxford Advanced Learner's Dictionary

     

    sergeant

     noun
    noun
    BrE BrE//ˈsɑːdʒənt//
     
    ; NAmE NAmE//ˈsɑːrdʒənt//
     
    (abbreviation Sergt, Sgt) The army, The police, The air force
     
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  1. 1a member of one of the middle ranks in the army and the air force, below an officer Sergeant Salter see also flight sergeant, staff sergeant See related entries: The army, The air force
  2. 2(in Britain) a police officer just below the rank of an inspector See related entries: The police
  3. 3(in the US) a police officer just below the rank of a lieutenant or captain see also sarge
  4. Word Origin Middle English: from Old French sergent, from Latin servient- ‘serving’, from the verb servire. Early use was as a general term meaning ‘attendant, servant’ and ‘common soldier’; the term was later applied to specific official roles.Extra examples Detective Sergeant Peter Wiles He had a voice like a drill sergeant. Visitors to the police station should report to the duty sergeant. a powerful recruiting sergeant for terrorist organizations
See the Oxford Advanced American Dictionary entry: sergeant