Definition of Sentinel
one whose job is to keep watch and protect
Examples of Sentinel in a sentence
The armed sentinel stood outside of the meeting room to make sure no one interrupted the two world leaders.
At my house, my German Shepherd is the sentinel who keeps anyone from coming inside without permission.
Sentinel is the name of the government’s drone program that helps to monitor the airspace over our country.
When the police arrived on the scene, they had to contend with the dog who was acting as a sentinel over its owner’s dead body.
In the movie, the job of the sentinel was to protect the humans by killing the mutants.
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