1. past tense of patrol; moved through an area regularly to watch for problems or provide security

Examples

• The security guard patrolled the building every hour.
• Police officers patrolled the neighborhood after the break-ins.
• Rangers patrolled the national park to protect wildlife.
• The coast guard patrolled the waters for illegal fishing boats.
• Soldiers patrolled the border throughout the night.
• The mall security team patrolled the parking lot regularly.