There are multiple definitions - click on the translation that matches your context.

patrulha

substantivo

partial

patrol

noun

Definitions of patrol

a group of people, especially soldiers or the police, who go around an area or a building to see what is happening

They were coming back from a routine search operation when their patrol was ambushed.

(of a group of people, especially soldiers or the police) the act of going around an area or a building to see what is happening

He was arrested after he verbally abused police officers who were on patrol near his home.