a soldier stationed at a place to stand guard and prevent the passage of unauthorized persons, watch for fires, etc., especially a sentinel stationed at a pass, gate, opening in a defense work, or the like.
a member of a guard or watch.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use sentry in a sentence
Every evening, after their sentries locked them in, the men had watched keenly as two fellow officers faced each other across a table, built, like most of the furniture in the house, from disused packing crates.How Two WWI POWs Conned Their Way Out With a Ouija Board | Margalit Fox | May 31, 2021 | The Daily Beast
As it approached Memorial Bridge, and the historic cemetery came into view, another pair of ladder trucks stood sentry.Officer Brian Sicknick remembered as hero who died defending the U.S. Capitol | Meagan Flynn, Emily Davies, Paul M. Duggan | February 3, 2021 | Washington Post
Last Tuesday, Delhi deployed teachers from government schools to bird duty—to stand as sentries at border points and check for any illegal transportation of poultry into the city state, in the midst of a spreading outbreak of avian flu.From tracking the coronavirus to checking chickens, India’s teachers are on every frontline | Samanth Subramanian | January 18, 2021 | Quartz
The immune system responds by producing antibodies to that protein, creating sentries against infection by the real virus.Allergic reactions to the coronavirus vaccine are rare and outweighed by the benefit of protection, CDC finds | William Wan, Joel Achenbach | January 6, 2021 | Washington Post
Of course you’d need to sabotage an encampment’s defenses, distract a few archers, and take out lonely sentries before charging in—you’re just one guy with a sword and a dream.
"You're a bunch of killers," a passerby told cops standing sentry there, according to one police source.
We found that the sentry safe which contained our footage had indeed been under water.Making 'The Dog': The Amazing True Story Behind ‘Dog Day Afternoon’ | Allison Berg and Frank Keraudren | August 10, 2014 | THE DAILY BEAST
I shared the sentiments of the Fatah sentry who allowed me inside the walls of the Muqata in Ramallah.I Traveled 6,000 Miles and a Lifetime to See the Pride Flag Fly at the U.S. Embassy in Israel | Jim Neal | June 30, 2014 | THE DAILY BEAST
Twice the mounted sentry at the gates was changed while I wandered up and down the asphalt walk.Read ‘The King in Yellow,’ the ‘True Detective’ Reference That’s the Key to the Show | Robert W. Chambers | February 20, 2014 | THE DAILY BEAST
He looked up at the sentry towers dotting the campus as the bus entered Kirkland.Should Juvenile Criminals Be Sentenced Like Adults? | Clark Merrefield | November 26, 2012 | THE DAILY BEAST
But mindful of her fears, he dispatched one of the troopers to stand sentry outside her door whilst he and his lackey supped.
That door and that sentry were obstacles which Garnache saw the futility of attempting to overcome without aid.
It was a mere joke, the sentry saw nothing; and the stone passed harmlessly over them.King Robert the Bruce | A. F. Murison
"It was by Marius's contrivance that he was placed sentry over the girl," he heard her tell Fortunio, and he thought she sneered.
The housekeeper stood sentry with the broom, and the worthy captains slept on for another half-hour.Skipper Worse | Alexander Lange Kielland
British Dictionary definitions for sentry
a soldier who guards or prevents unauthorized access to a place, keeps watch for danger, etc
the watch kept by a sentry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012