sentinel

noun
sen·​ti·​nel | \ ˈsent-nəl How to pronounce sentinel (audio) , ˈsen-tə-nəl\

Definition of sentinel

 (Entry 1 of 2)

: sentry

sentinel

verb
sentineled or sentinelled; sentineling or sentinelling

Definition of sentinel (Entry 2 of 2)

transitive verb

1 : to watch over as a sentinel
2 : to furnish with a sentinel
3 : to post as sentinel

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Examples of sentinel in a Sentence

Noun

a lone sentinel kept watch over the fort

Recent Examples on the Web: Noun

On a tower in the Brazilian rain forest, a sentinel scans the horizon for the first signs of fire. Brian K. Sullivan, Fortune, "How Artificial Intelligence Could Help Fight Climate Change-Driven Wildfires and Save Lives," 10 Aug. 2019 Some sites have views spanning all four of this area’s sentinel landmarks: Longs Peak, Mt. Evans, Devil’s Head and Pikes Peak. Mark Samuelson, The Denver Post, "Come see a custom farmhouse ranch on 1.6 acres at Fox Hill, where fruit is already on the trees and fresh eggs are waiting," 18 July 2019 In the distance, the towering rocks of Zion National Park stood like sentinels. James Murren, latimes.com, "At Utah's Gooseberry Mesa, the joy and power of wilderness prevail," 13 July 2019 Six garbage cans overflowing with plastic bags, loose pieces of clothing and paper waste line the McMicken curb like sentinels. Mark Curnutte, Cincinnati.com, "4 addresses in 4 months: This is what poverty looks like for this Cincinnati family," 10 July 2019 From that vantage point, the Hallgrímskirkja feels like a sentinel quietly watching over Reykjavík. Rumela Basu, National Geographic, "Iceland’s tallest church was inspired by volcanoes," 27 June 2019 Of course, a statue of Lenin stands sentinel, and a mural of a seafaring Vladimir Putin reminds you which country now owns the peninsula. Jeff Opdyke, latimes.com, "Crimea is an unexpected beauty set against an unsettled history," 23 June 2019 Gnarled, yet still dropping olives, one tree grows within a few yards of a Neolithic stone that has stood sentinel for nearly 5,000 years. Anne Farrar, National Geographic, "Here’s why everyone is going to Portugal now," 18 June 2019 According to the sentinel hypothesis, staggered sleep evolved to ensure that there was always some portion of a group awake and able to detect threats. Bridget Alex, Discover Magazine, "How Our Sleeping Habits Helped to Make Us Human," 1 Jan. 2019

Recent Examples on the Web: Verb

It has been guarded every hour of every day since 1937 by elite Tomb Guard sentinels. Jesse Ryan, USA TODAY, "VR: Witness a sacred ritual and America’s highest honor at Arlington National Cemetery," 29 May 2017 When Chinese leaders gaze out toward the Pacific, their panorama is obstructed by a string of military airfields, naval anchorages, radar emplacements and listening posts sentineled by U.S. forces and their allies. Andrew Browne, WSJ, "To China, America Finally Looks Vulnerable," 14 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sentinel.' 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 sentinel

Noun

1579, in the meaning defined above

Verb

1593, in the meaning defined at sense 1

History and Etymology for sentinel

Noun

Middle French sentinelle, from Old Italian sentinella, from sentina vigilance, from sentire to perceive, from Latin

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More Definitions for sentinel

sentinel

noun
sen·​ti·​nel | \ ˈsen-tə-nəl How to pronounce sentinel (audio) \

Kids Definition of sentinel

: sentry

sentinel

adjective
sen·​ti·​nel | \ ˈsent-ᵊn-əl How to pronounce sentinel (audio) \

Medical Definition of sentinel

: being an individual or part of a population potentially susceptible to an infection or infestation that is being monitored for the appearance or recurrence of the causative pathogen or parasite

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