patroller
One making rounds
A patroller is someone who patrols—moving through an area to monitor, guard, or maintain order.
Security guards, police officers, and volunteers may serve as patrollers: Beach patrollers warned swimmers about the riptide.
Ski patrollers monitor slopes for safety hazards and assist injured skiers.
Ammunition or bout divisions
- routePath from A to B
- squad carPolice officer's vehicle
- cruiserVehicle for extended patrol
- beat copOfficer assigned regular route
walking beat · neighborhood watch · community policing · sector · zone · shift · dispatch · radio
Image capturing device
- monitorDisplay or supervisor
- CCTVSurveillance camera network
- droneUnmanned flying machine
- watchtowerElevated structure for surveillance
radar · reconnaissance · tracking · sensors · binoculars · infrared · night vision · motion detector
Building security guard
- sentinelGuard who monitors
- sentryGuard on duty
- wardenSupervisory custodian of place
- custodianGuardian of a place
gatekeeper · protector · defender · enforcer · bouncer · bodyguard · escort · peacekeeper
One who monitors work
- antebellumBefore a war's start
- plantationLarge-scale farming operation
- runawayOne who flees
- fugitiveOne fleeing authorities
night watch · slave catcher · bondage · enslaved · Confederate · master · abolitionist · manumission
Active mental awareness
- watchfulnessCareful, sustained attention
- attentivenessConcentrated awareness of surroundings
- awarenessState of perceiving reality
- readinessState of being prepared
caution · keenness · sharpness · scrutiny · diligence · observation · detection · suspicious activity
Paid swimming supervisor
- park rangerPublic lands officer
- rescueSave from harm
- boardwalkPlanked waterfront pathway
- campgroundDesignated outdoor lodging area
rounds
Ammunition or bout divisions
beat cop · walking beat · neighborhood watch · community policing · sector · zone · shift · dispatch · radio · checkpoint
camera
Image capturing device
watchtower · radar · reconnaissance · tracking · sensors · binoculars · infrared · night vision · motion detector · satellite
watchman
Building security guard
custodian · gatekeeper · protector · defender · enforcer · bouncer · bodyguard · escort · peacekeeper · constable
overseer
One who monitors work
- antebellumBefore a war's start
- plantationLarge-scale farming operation
- runawayOne who flees
fugitive · night watch · slave catcher · bondage · enslaved · Confederate · master · abolitionist · manumission · Juneteenth
alertness
Active mental awareness
- watchfulnessCareful, sustained attention
- attentivenessConcentrated awareness of surroundings
- awarenessState of perceiving reality
readiness · caution · keenness · sharpness · scrutiny · diligence · observation · detection · suspicious activity · reporting
lifeguard
Paid swimming supervisor
- park rangerPublic lands officer
- rescueSave from harm
- boardwalkPlanked waterfront pathway
campground · wilderness area · first responder · avalanche control
- overseersoverseer, supervisor, superintendent, monitor, foreman
- watcherswatcher, birdwatchers, watchman, lookout, sports fans
- slaverychattel slavery, enslaved, slave, enslavement, slave traders
- insect castesqueen bee, queen ant, worker bee, worker ant, soldier ant
patrollersentry
Guard on duty
guard · watchman · gatekeeper · sentinel · tower guard
patrollerintruder
Unauthorized person present
trespasser · infiltrator · prowler · invader · fugitive
- ski patrollerResort slope safety worker