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Definition of sentry

sentry

/ˈsɛn.tɹi/
sen · try
Plural:sentries
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sentry Lexical Profile

sentry Game Scores & Validity

• noun

1

A soldier or guard stationed at a specific post to keep watch and prevent unauthorized access.

Example

"The night sentry checked the identification badges of everyone entering the research facility."

2

The duty or act of keeping watch over a post or area, especially in phrases such as "stand sentry" or "keep sentry."

Example

"Tall pine trees stood sentry along the winding mountain road."

Synonyms
View all synonyms for sentry

Word Nuance & Usage

Do not confuse "sentry" (a guard or watchman) with "century" (a period of one hundred years).

• Rhymes for sentry

• Nearby Words

sentimentalize
sentimentally
sentinel
sentry
seoul
separable
separably

Word Origin & Etymology

First recorded in the early 17th century, probably as a shortened alteration of "centrinel," an obsolete variant of "sentinel" ultimately derived from Italian "sentinella" (a watch or guard).

Cite this Entry

Wordmom. (2026). Definition of Sentry. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/sentry
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