security guard

security man, guard, watchman

A security guard or security officer is usually a privately and formally employed person who is paid to protect property, assets, and/or people. Often, security officers are uniformed and act to protect property by maintaining a high visibility presence to deter illegal and/or inappropriate actions, observing (either directly, through patrols, or by watching alarm systems or video cameras) for signs of crime, fire or disorder; then taking action and/or reporting any incidents to their client, employer and emergency services as appropriate. Since at least the Middle Ages in Europe, the term watchman was more commonly applied to this function.
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Noun
1. a guard who keeps watch
(synonym) watchman, watcher
(hypernym) guard
(hyponym) bank guard
(member-holonym) security force, private security force

security guard
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