Word.ws English Dictionary

sentinel

/ˈsɛn.tɪ.nəl/

sentinel noun: a sentry, watch, or guard.

Noun

sentinel (plural sentinels)

  1. A sentry, watch, or guard.
    • They promised faithfully to bear their confinement with patience, and were very thankful that they had such good usage as to have provisions and light left them; for Friday gave them candles (such as we made ourselves) for their comfort; and they did not know but that he stood sentinel over them at...1719 May 6 (Gregorian calendar), [Daniel Defoe], The Life and Strange Surprizing Adventures of Robinson Crusoe, […], London: […] W[illiam] Taylor […], →OCLC
    • the sentinels who paced the ramparts1849–1861, Thomas Babington Macaulay, chapter XII, in The History of England from the Accession of James the Second, volume (please specify |volume=I to V), London: Longman, Brown, Green, and...
  2. (obsolete) A private soldier.
    • “I will not permit the poorest centinel to be treated with injustice.”1789, John Moore, Zeluco, Valancourt, published 2008, page 33
  3. A unique value recognised by a computer program for processing in a special way, or marking the end of a set of data.
    • The <xmp> tag is a sentinel that suspends web-page processing and displays the subsequent text literally
    • […] a sentinel value that indicates a missing entry.2016, Jake VanderPlas, Python Data Science Handbook, page 120
  4. A sentinel crab.
  5. (attributive) A sign of a health risk (e.g. a disease, an adverse effect).
    • sentinel animals can be used to explore endemic diseases.

Verb

sentinel (third-person singular simple present sentinels, present participle (US) sentineling or (UK) sentinelling, simple past and past participle (US) sentineled or (UK) sentinelled)

  1. (transitive) To watch over as a guard.
    • He sentineled the north wall.
  2. (transitive) To post a guard for.
    • He sentineled the north wall with just one man.
    • The old-fashioned stoop, with its suggestive benches on either side, lay solitary and silent in the moonlight; the garden path, weedily overgrown since father's death, and sentineled here and there with ragged hollyhock, lay quiet and dew-laden […]1873, Harper's New Monthly Magazine, volume 46, page 562

Proper noun capitalized: Sentinel

Sentinel

  1. An unincorporated community in Maricopa County, Arizona.
  2. A ghost town in Fresno County, California.
  3. An unincorporated community in Polk County, Missouri.
  4. A town in Washita County, Oklahoma.

sentinel meaning in Hindi, Tamil, Urdu and Bengali

sentinel in Hindi

a sentry or guard
प्रहरी prahrī

sentinel in Tamil

இடங்காட்டுங் குறி, குறிகாட்டி

sentinel in Urdu

چوکیدار, پاسبان

sentinel in Bengali

প্রহরী, পাহারাদার
More languagesFewer languages
sentinel in Telugu
అంగజాల aṅgajāla, కావలివాడు kāvalivāḍu
sentinel in Malayalam
കാവൽക്കാരൻ
sentinel in Kannada
ಕಾವಲು ಸಿಪಾಯಿ, ಕಾವಲುಗಾರ, ಪಡೆಯ ಕಾವಲು
sentinel in Odia
ସେଣ୍ଟିନେଲ୍, ସେଣ୍ଟିନେଲ
sentinel in Nepali
सेनटेनल, सेन्टिनेल
sentinel in Arabic
حَارِس ḥāris, خَفِير ḵafīr, غَفِير ḡafīr

Examples of sentinel in a sentence

  • The sentinel challenged us with "Who goes there?"
  • Post a sentinel in front of the door.
  • The class of minimal clauses is outerly sentineled by the negative example.

All 17 example sentences with sentinel

Forms of sentinel

Noun
pluralsentinels
alternative form (obsolete)centinel
Verb
third-person singular presentsentinels
present participle USsentineling
present participle UKsentinelling
past participle USsentineled
past USsentineled
past participle UKsentinelled
past UKsentinelled

Plural of sentinel: sentinels

Origin of sentinel

First attested in the 1570s from Middle French sentinelle (“watch or guard kept by a soldier”), from Old Italian sentinella, probably from sentina + -ella, from sentire (“perceive, watch, hear”), from sentiō (“feel, perceive by the senses”). See also sense, sentient.

Words formed from sentinel

Phrases with sentinel

Questions about sentinel

What does sentinel mean?
Sentinel means a sentry, watch, or guard.
What is sentinel in Hindi?
Sentinel in Hindi is प्रहरी (prahrī). See Sentinel meaning in Hindi.
What part of speech is sentinel?
Sentinel can be a noun, a verb or a proper noun.
How do you pronounce sentinel?
Sentinel is pronounced /ˈsɛn.tɪ.nəl/.
What is the plural of sentinel?
The plural of sentinel is sentinels.

Words near sentinel in the dictionary

  1. sentimentless
  2. sentiments
  3. sentimo
  4. sentimos
  5. sentine
  6. sentinel
  7. sentinel crab
  8. sentinel crabs
  9. sentinel event
  10. sentinel events
  11. sentineled

Source and license

Adapted from Wiktionary: sentinel (page history and authors); Sentinel (page history and authors); sentinel (Tamil Wiktionary) (page history and authors); sentinel (Urdu Wiktionary) (page history and authors); sentinel (Bengali Wiktionary) (page history and authors); అంగజాల (Telugu) (page history and authors); sentinel (Malayalam Wiktionary) (page history and authors); sentinel (Kannada Wiktionary) (page history and authors); sentinel (Odia, IndicTrans2 machine translation) (model and license); sentinel (Nepali, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-sentinel.ogg.

Cite this entry: “sentinel.” Word.ws, https://word.ws/sentinel. Based on Wiktionary, CC BY-SA 4.0.