plural noun
clothing other than one’s uniform, especially civilian clothes worn on duty by a police officer.
plural noun


“ordinary dress” (as opposed to military uniform), 1822; of police detectives, it is attested from 1842. Also plainclothes.


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    [pleyn] /pleɪn/ adjective, plainer, plainest. 1. clear or distinct to the eye or ear: a plain trail to the river; to stand in plain view. 2. clear to the mind; evident, manifest, or obvious: to make one’s meaning plain. 3. conveying the meaning clearly and simply; easily understood: plain talk. 4. downright; sheer; utter; self-evident: […]

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