Sentinel

usgb/ˈsentɪnl/
noun

A person or thing that watches or stands as if watching.

A sentinel in a tower overlooking the bay.
Visual representation of "sentinel" - A person or thing that watches or stands as if watching.

Often appears as...

  • sentinel node
  • sentinel surveillance
Definition 1 of 3
Visual representation of "sentinel"
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Visual Imagery

Think of a sentinel as an observer who carefully watches over a specific area or object.

Illustration for Visual Imagery
A motion sensor acted as a silent sentinel, triggering the alarm.
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Personification

Sentinel can be used to describe non-human entities that act as guards, like security systems.

Illustration for Personification
The lighthouse served as a sentinel for the safe return of sailors.
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Metaphoric Use

Used metaphorically, 'sentinel' implies vigilance and an imposing or protective presence.

Illustration for Metaphoric Use
The tall cypress trees stood like sentinels around the ancient villa.
Visual representation of the word "Sentinel"

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