a person or group of people whose job is to protect a person, place, or thing from danger or attack, or to prevent a person such as a criminal from escaping
Armed guards are posted around the site.
The frontier is patrolled by border guards.
The security guard monitored the entrance closely.
Guards are stationed at the museum to protect valuable artifacts.
A team of guards ensures the safety of the diplomatic compound.
The guard escorted the VIP through the crowded event.
