sen·​try | \ ˈsen-trē How to pronounce sentry (audio) \
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

Ramirez, a switch-hitter, stood right over home plate like a sentry, daring pitchers to try to beat him inside with fastballs. Tom Verducci,, "Seven Reasons Behind Jose Ramirez's Strange and Steep Decline," 10 June 2019 Subtle attacks on the pancreas are led by the sentries of the immune system, T cells. Jennifer Couzin-frankel, Science | AAAS, "In milestone trial, experimental drug delays type 1 diabetes," 9 June 2019 The Taj Mahal Palace, Mumbai, India The Taj Mahal Palace is a 1903, grey-and-white stone, red-domed wedding cake of a building that stands sentry over Mumbai’s harbor. Betsy Blumenthal, Condé Nast Traveler, "The Best Hotels in the World: 2018 Readers' Choice Awards," 9 Oct. 2018 This is akin to removing your sentries from guard posts on military compounds. Emily Stewart, Vox, "The Trump administration is dismantling financial protections for the military," 14 Aug. 2018 Most had fences with barbed wire, guard towers with armed sentries, and few comforts. Rick Hampson, USA TODAY, "Celebrating Independence Day in America's detention camps – during World War II and now," 2 July 2018 Scientists have just genetically retooled human cells to act as micro disease sentries and drug factories inside the body. William Herkewitz, Popular Mechanics, "Engineered Cells Can Create Medicine Inside Your Body," 17 Dec. 2015 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

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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Statistics for sentry

Last Updated

18 Jun 2019

Look-up Popularity

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 How to pronounce sentry (audio) \
plural sentries

Kids Definition of sentry

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

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More from Merriam-Webster on sentry

Rhyming Dictionary: Words that rhyme with sentry

Thesaurus: All synonyms and antonyms for sentry

Spanish Central: Translation of sentry

Nglish: Translation of sentry for Spanish Speakers

Comments on sentry

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incapable of being surmounted or overcome

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