sen·try | \ˈsen-trē \
plural sentries

Definition of sentry 

: guard, watch especially : a soldier standing guard at a point of passage (such as a gate)

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Examples of sentry in a Sentence

The general placed an armed sentry at the bridge. a sentry posted to watch for intruders

Recent Examples on the Web

Until there are more such officers throughout the state, the sentry program is a way to protect students, Ivey said. Madison Park, CNN, "Alabama will allow trained school administrators to be armed," 1 June 2018 The foot guide passed along the all-clear signal from the sentries in the trees, and a small group of migrants began to sprint toward a 18-foot steel security fence blocking their passage into the United States. Nicholas Kulish,, "Desperation led migrant to face perils, and price, of smuggling," 1 July 2018 The researchers propose that a weakening of the immune system may explain the many perils of L.O.Y. When white blood cells that serve as immune sentries lose their Y chromosome, Dr. Dumanski said, their surveillance skills falter. Natalie Angier, New York Times, "Secrets of the Y Chromosome," 11 June 2018 Since the 1920s, Hale has stood sentry as visitors entered the museum. Susan Dunne,, "The Sculptures Outside The Wadsworth, Explained," 9 July 2018 These robots could also act as sentries, placed in positions in advance set in surveillance mode, and ready to swing into action when enemy tanks begin rolling towards them. Allison Barrie, Fox News, "Tank-killing robot revealed," 22 June 2018 Early in the morning, sentries posted outside town sounded a prearranged signal — a blast from a stick of dynamite — and the raid was on. John D'anna, azcentral, "Think child separations are unprecedented? Here are 3 heartbreaking examples from history," 21 June 2018 Her boyfriend, who was sitting in a car the woman had been driving, witnessed the crash, as did sentries at the Naval Amphibious Base, police Capt. Pauline Repard,, "Woman hit by pickup, killed, on Silver Strand in Coronado," 15 June 2018 For decades the water tower has stood sentry above a gravel lot, falling into inevitable decline. Gregg Doyel, Indianapolis Star, "Doyel: Facelift for iconic water tower a reminder of what Milan Miracle means," 9 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sentry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sentry

1608, in the meaning defined above

History and Etymology for sentry

perhaps from obsolete sentry sanctuary, watchtower

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Phrases Related to sentry

stand sentry

Statistics for sentry

Last Updated

10 Sep 2018

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Time Traveler for sentry

The first known use of sentry was in 1608

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More Definitions for sentry



English Language Learners Definition of sentry

: a soldier who guards a door, gate, etc.


sen·try | \ˈsen-trē \
plural sentries

Kids Definition of sentry

: a person (as a soldier) on duty as a guard

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Comments on sentry

What made you want to look up sentry? Please tell us where you read or heard it (including the quote, if possible).


evasion of direct action or statement

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