sentry

noun

sen·​try ˈsen-trē How to pronounce sentry (audio)
plural sentries
: guard, watch
especially : a soldier standing guard at a point of passage (such as a gate)

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Reenactors portraying British sentries were bum-rushed by a swarm of whooping Green Mountain Boys. Caity Weaver, The Atlantic, 8 Oct. 2025 But now, as California enters what is historically the most dangerous part of fire season — the end of summer before the first major rains — lone human sentries have largely given way to a new type of fire lookout on mountain tops: high-tech cameras. Paul Rogers, Boston Herald, 23 Sep. 2025 Aside from scouting, sending messages or sentry duty, some dogs were trained for direct combat. Vic Verbalaitis, MSNBC Newsweek, 22 Aug. 2025 Rows of lights stood like sentries above, adorned with flat visors that guided the glow onto the action. Adithi Ramakrishnan, Twin Cities, 21 Aug. 2025 See All Example Sentences for sentry

Word History

Etymology

perhaps from obsolete sentry sanctuary, watchtower

First Known Use

1608, in the meaning defined above

Time Traveler
The first known use of sentry was in 1608

Browse Nearby Words

Cite this Entry

“Sentry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sentry. Accessed 23 Oct. 2025.

Kids Definition

sentry

noun
sen·​try ˈsen-trē How to pronounce sentry (audio)
plural sentries
: guard entry 1 sense 3a
especially : a soldier standing guard at a point of passage

More from Merriam-Webster on sentry

Last Updated: - Updated example sentences
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