Dec 5, 2015 · The meaning of SENTINEL is sentry. How to use sentinel in a sentence.

SENTINEL definition: a person or thing that watches or stands as if watching. See examples of sentinel used in a sentence.

SENTINEL meaning: 1. a person employed to guard something: 2. Sentinel is also used in the names of some newspapers…. Learn more.

One who or something which keeps guard like a military sentry. Originally Nautical.

sentinel noun A person or special body of persons assigned to provide protection or keep watch over, for example:

Definition of sentinel noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 14, 2025 · sentinel (third-person singular simple present sentinels, present participle (US) sentineling or (UK) sentinelling, simple past and past participle (US) sentineled or (UK) …

General Definition: A sentinel is typically defined as a person or a sentry who guards or watches over a specific area. The role primarily involves maintaining vigilance and ensuring security …

A sentinel is a guard, a lookout, a person keeping watch. It's often a soldier, but not always. If you're watching a pot, waiting for it to boil, you're standing sentinel over it — and incidentally, it …

Sentinel definition: One that keeps guard; a sentry.