Both Uses
sentinel
in
A Horseman in the Sky
(Auto-generated)
- At nightfall they would take to the road again, climb to the place where their unfaithful sentinel now slept, and, descending the other slope of the ridge, fall upon a camp of the enemy at about midnight.†
- The sleeping sentinel in the clump of laurel was a young Virginian named Carter Druse.†
*
Definitions:
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(1)
(sentinel) a person who stands guard or looks out for something
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(2)
(meaning too rare to warrant focus) Much more rarely, sentinel can be used as a verb meaning to stand guard, or provide or post a guard; or to look out for something.
As a proper noun, Sentinel is sometimes used in the name of a newspaper to indicate that the newspaper is looking out for news the public would want.