1. the action of walking or traveling around an area at regular intervals to guard or monitor it
2. a person or group of people who patrol an area

1. to walk or travel around an area at regular intervals in order to guard or monitor it

Examples

• The security guard made his nightly patrol around the building.
• Police increased patrols in the neighborhood after the break-ins.
• The border patrol stopped several vehicles at the checkpoint.
• Officers patrol the streets on foot and in cars.
• A patrol of soldiers marched along the perimeter.
• The park ranger patrols the trails every morning.
• Coast Guard vessels patrol the waters near the harbor.