- 1[transitive, intransitive] patrol (something) to go around an area or a building at regular times to check that it is safe and that there is no trouble Troops patrolled the border day and night. Guards can be seen patrolling everywhere.
- 2[transitive] patrol something to drive or walk around a particular area, especially in a threatening way Gangs of youths patrol the streets at night.
NAmE//pəˈtroʊl//Verb Forms present simple I / you / we / they patrol
he / she / it patrols
past simple patrolled
-ing form patrolling