1. A detachment used for security or reconnaissance
   "The patrol reported suspicious activity near the border"
    
2. The activity of going around or through an area at regular intervals for security purposes
   "The security guard's nightly patrol helped deter potential intruders"
    
3. A group that goes through a region at regular intervals for the purpose of security
   "The neighbourhood watch patrol reported suspicious activity to the police"

1. Watch over or guard an area by regularly walking around
   "Police officers patrol the streets to maintain order and safety";
   - police

Derived forms: patrolling, patrolled, patrols

Type of: detachment, force, guard, personnel, protection

Encyclopedia: Patrol