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harness bull

A dated American slang term for a uniformed police officer — specifically one who walks a beat in full uniform, as opposed to a plainclothes detective.

ˈhɑɹnəs ˈbʊlhistorical186 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026

A dated American slang term for a uniformed police officer — specifically one who walks a beat in full uniform, as opposed to a plainclothes detective. The "harness" refers to the belt, holster, and gear a cop straps on, and "bull" was old-school criminal slang for a cop or lawman. Put them together and you get a vivid image of someone all geared up in official uniform. Though old-fashioned today, you'll still catch it in crime fiction, noir films, and classic TV dramas.

The pickpocket spotted the harness bull on the corner and immediately changed direction.
Origin: American criminal slang, early-to-mid 20th century; "bull" for police officer predates this compound and was common in hobo and underworld argot. Editorial expansion authored on Slangora.
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#2·Apr 27, 2026

(US, slang, dated) A uniformed police officer.

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