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

Thora Birch makes her debut as new character Gamma, a member of the Whisperers who serves as a sentry. Nick Romano,, "New The Walking Dead season 10 photos tease intense fights and new characters," 8 Aug. 2019 Its symmetrical buildings remain behind a high fence with trespassing warnings, a sheriff’s car parked as sentry. Carolyn Kellogg,, "Colson Whitehead on the ‘incredible evil’ of the real school that inspired ‘Nickel Boys’," 12 July 2019 Belvedere Castle has risen above the meadows and woods of Central Park since 1872, like an aging sentry keeping watch over a swathe of Manhattan’s grandest and most coveted real estate. New York Times, "Central Park’s Castle Gets a $12 Million Fairy-Tale Makeover," 12 July 2019 Another rosebush in the video acts as a sort of pet sentry, sensing when a cat scurries out a door and sending an alert to its owner's computer so the fugitive feline can be retrieved. NBC News, "These 'cyborg' plants can sense motion, send alerts and even move around," 19 June 2019 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

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

27 Aug 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

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


to spread over or through

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