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Noun: plainclothesman (plainclothesmen)  'pleyn'klow(dh)z-mun
  1. A detective who wears civilian clothes on duty
    "The plainclothesman blended in with the crowd to observe suspicious activity"

Derived forms: plainclothesmen

Type of: adult male, bozo [N. Amer, informal], cat [N. Amer, informal], chappie [Brit, informal], geezer [Brit, informal], guy [informal], hombre [N. Amer, informal], man, plain clothes detective, sod [informal]

Encyclopedia: Plainclothesman