WordWeb Online

1. A detachment used for security or reconnaissance
    
2. The activity of going around or through an area at regular intervals for security purposes
    
3. A group that goes through a region at regular intervals for the purpose of security

1. Watch over or guard an area by regularly walking around
   - police

Derived forms: patrolled, patrols, patrolling

See also: patroller

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

Encyclopedia: Patrol