sentinel

"When you only have a handful of species that can persist in environments like that, and they're really sensitive to change, those serve as really good sentinel taxa," Adams said.

From Science Daily ● Jan. 10, 2026

Ahead of our return to the city, we drive back up the ridge, back through Burguete, the inn still shuttered, and up to Roncesvalles, where the old monastery looms like a sentinel over the pass.

From Salon ● Nov. 8, 2025

The rate at which flu tests returned positive results at the state’s clinical sentinel labs surged to 27.8% for the week ending Feb. 1, the most recent for which complete data are available.

From Los Angeles Times ● Feb. 11, 2025

The church stood empty like a silent sentinel over a small cemetery next to it.

From Slate ● Oct. 24, 2024

Two sentinel boulders, dripping wet, decorated with flowers, ferns, moss, weeds—everything that loved water—guarded a bathtub-sized spring.

From "My Side of the Mountain" by Jean Craighead George

“We stand on the walls, sentinels of the inner sanctum, against the assault of AI slop. The Ontology is based firmly in reality—there is, here, a dialectic between ground truth, tribal knowledge, and enhancements.”

From The Wall Street Journal ● May 5, 2026

“We stand on the walls, sentinels of the inner sanctum, against the assault of AI slop,” Karp said in his letter to shareholders.

From Barron's ● May 4, 2026

“The workers, the cats, and the bulk milk samples are the best sentinels for early dairy herd diagnoses,” he said.

From Los Angeles Times ● Feb. 21, 2025

"Our dogs could be our sentinels -- the canine in the proverbial coal mine."

From Science Daily ● Jan. 18, 2024

The pines and sentinels gave way to huge dark oaks.

From "A Clash of Kings" by George R.R. Martin

As by the elms that line its street, the hills that watch its roofs, Lyme, Conn., is sentineled by artistic good usage, fortressed by aesthetic tradition.

From Time Magazine Archive

With a couple of bounds he sentineled the doorway, barring the intended exodus.

From The Lash by Lyman, Olin L.

The prison was both civil and military, but was patrolled and sentineled by soldiers.

From The Goose Girl by MacGrath, Harold

This road is sentineled all the way to camp.

From Then Marched the Brave by Hicks, Anna S.

He saw that the walls were poorly sentineled, but they were sufficiently high to render an attempt to scale them foredoomed to failure.

From The Chessmen of Mars by Burroughs, Edgar Rice

He was stationed at Fort Knox, where he sentinelled the country’s gold reserves.

From The New Yorker ● Mar. 27, 2017

Williamstown, sentinelled with maple trees, smiles at the Berkshires.

From Time Magazine Archive

And that no sordidness might pass therein He sentinelled the door with savage jinn, Invisible and with the flaming powers Of Sheol in their guarding scimitars.

From Legends & Romances of Spain by Spence, Lewis

Under what a tempest of conjectures she looked down and across the great hall to the closed and sentinelled door of that front drawing-room so rife with poignant recollections.

From Kincaid's Battery by Kimball, Alonzo

I think of it As the Celestial City, paved with gold, And sentinelled with angels.

From The Complete Poems of Henry Wadsworth Longfellow by Longfellow, Henry Wadsworth

The two great poplar-trees, sentineling what had once been the gate of the old Gordon homestead, had been spared through all the industrial changes.

From The Quickening by Ashe, E. M.

The dry stalks, sentinelling the seared ground, waved their tattered remnants of unpicked bolls to and fro—summer's battle flags which had not yet fallen.

From The Bishop of Cottontown A Story of the Southern Cotton Mills by Moore, John Trotwood

The round green hills sentinelling the broad, expansive bosom of the Hudson held her attention by their beauty as the train followed the line of the stream.

From Sister Carrie: a Novel by Dreiser, Theodore

Dignity and grace lie in these tall swaying trees sentinelling the way on either side.

From In the Claws of the German Eagle by Williams, Albert Rhys