U
- Uniform
- A term originally used by non-uniformed officers (detectives) for officers in uniform.
- Untouchables
- A term often used in Scotland for a mobile squad of uniformed Police, term originates from the 1960s US TV series.
- Utzer
- German, slang, used e.g. in Upper Franconia, literally means "teaser".
- Unipo
- Short for University Police, used as a derogatory term towards campus police in some areas of the US.
Read more about this topic: List Of Police-related Slang Terms