PCSO /ˌpiː siː es ˈəʊ $ -ˈoʊ/ BrE AmE noun [countable]
(police community support officer) someone whose job with the police is to ↑ patrol (=walk around) an area in order to make the people who live or work there feel safer, and to find out about criminal activity in that area. PCSOs do not have the same rights and duties as an ordinary police officer.