turtle

¹ American  

[tur-tl] / ˈtɜr tl /

noun

turtles, plural turtle plural

1. any reptile of the order Testudines, comprising aquatic and terrestrial species having the trunk enclosed in a shell consisting of a dorsal carapace and a ventral plastron.

2. (not used technically) an aquatic turtle as distinguished from a terrestrial one.

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verb (used without object)

turtled, turtling

1. to catch turtles, especially as a business.

idioms

1. turn turtle,

   1. Nautical. to capsize or turn over completely in foundering.

   2. to overturn; upset.

      Several of the cars turned turtle in the course of the race.

turtle ² American  

[tur-tl] / ˈtɜr tl /

noun

Archaic.

1. a turtledove.

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turtle ¹ British  

/ ˈtɜːtəl /

noun

1. any of various aquatic chelonian reptiles, esp those of the marine family Chelonidae , having a flattened shell enclosing the body and flipper-like limbs adapted for swimming

2. any of the chelonian reptiles, including the tortoises and terrapins

3. nautical a zip bag made as part of a spinnaker for holding the sail so that it can be set rapidly

4. to capsize

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verb

1. (intr) to catch or hunt turtles

turtle ² British  

/ ˈtɜːtəl /

noun

1. an archaic name for turtledove

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turtle More Idioms  

1. see turn turtle.

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Usage

What’s the difference between a turtle and a tortoise? The words turtle and tortoise are sometimes used interchangeably, and turtle is the more general term. The word tortoise is sometimes used to distinguish a turtle as being a terrestrial (mostly land-dwelling) one, as opposed to an aquatic turtle (one that spends most of its time in water). However, this doesn’t mean that a turtle is necessarily aquatic simply because it’s called a turtle. For example, the box turtle is primarily terrestrial (it can also be called the box tortoise). Turtles and tortoises are both reptiles that belong to the order Testudines. Whether something is called a turtle or a tortoise often depends on its habitat and physical features. Some aquatic turtles, like snapping turtles, have webbed feet, while others, like sea turtles, have flippers. In contrast, turtles that are called tortoises typically have stubby, round feet, and their shells are often more domed. Here are a few quick questions to help you determine whether it’s more appropriate to call something a turtle or a tortoise. Q: Does it spend a lot of time in the water and have webbed feet or flippers?A: It’s probably called a turtle. Q: Does it live mostly on land and have a domed shell and round feet?A: There’s a good chance it’s called a tortoise, but this isn’t always the case. Q: Is it a teenaged, mutant ninja?A: It’s a turtle. Still stumped? Ask a herpetologist. Want to learn more? Read the full breakdown of the difference between turtles and tortoises.

Other Word Forms

Derived Forms

• turtler
  noun

Inflected Forms

Nouns

• turtle
  plural
• turtles
  plural

Etymology

Origin of turtle¹

1625–35; alteration (influenced by turtle ² ) of French tortue < Medieval Latin tortūca tortoise

Origin of turtle²

before 1000; Middle English, Old English < Latin turtur (imitative)

Explanation

A turtle is a reptile with a hard shell that works as a protective shield. Although turtles breathe air, many of them spend much of their lives underwater — so you should make sure your pet turtle has a nice place to swim. The oldest turtles we know of lived 220 million years ago, making them much older than other reptiles like snakes and crocodiles. They live near water, many of them laying their eggs in sand or soil near the shore. Turtles and tortoises are officially the same animal, although we often refer to land-dwelling turtles as tortoises. While turtles may be known for their short legs and slow pace, they're also famous for being long-lived — some live well over 100 years.

Example Sentences

See Examples For:

turtle turtles turtled turtling

A survey of the Blean will focus on six endangered species that are found there, including the the heath fritillary butterfly, one of the UK's rarest, and the turtle dove.

From BBC ● Jul. 11, 2026

Her conservation work began after what her loved ones described as a life-changing encounter with a turtle laying eggs on Mansouri beach in 1999.

From BBC ● Jun. 20, 2026

Torres bounced around three locations over the next four days with his father, girlfriend, three parakeets, a dog and a turtle named Squirt while fielding calls from irate and scared residents.

From Los Angeles Times ● May 28, 2026

“I want to say it was the happiest day of my life, but I have two children,” said Debra Schiff, 69, a bird-watcher, while admiring a turtle at the lagoon.

From The Wall Street Journal ● May 16, 2026

Once, he left the playground swings for the turtle pond.

From "Caterpillar Summer" by Gillian McDunn

A handful of California species recoveries have been championed as success stories under the Endangered Species Act, including southern sea otters, peregrine falcons, humpback whales, bald eagles and green sea turtles.

From Los Angeles Times ● Jul. 11, 2026

The decision to investigate these cells in mice grew out of earlier work by Mysore and other researchers studying birds, frogs, and turtles.

From Science Daily ● Jun. 24, 2026

"That, perhaps, is Mona's greatest legacy - she did not only protect turtles; she inspired people to care about them."

From BBC ● Jun. 20, 2026

"Maybe my son will not even see sea turtles in the future," he said.

From Barron's ● Jun. 17, 2026

But as I started to head back out, I noticed the bag with the turtles I’d taken with me to Worlds sitting in the corner.

From "Courage to Soar" by Simone Biles

I skate low, torso over toes, head turtled forward.

From The New Yorker ● Nov. 4, 2019

She spends most of her time turtled in bed.

From Slate ● Aug. 26, 2015

They turtled at first, then they quit, wallowing in self-pity and requiring emergency spine implants.

From Chicago Tribune ● May 8, 2012

Art was with the same Mr. Dunwoody whose car Pluto Noak’d turtled over last year.

From "Black Swan Green" by David Mitchell

I yanked the cuffs of my sweatshirt down as far as they would go, picked up my board and turtled into the collar of my jacket as the lady hurried across the street.

From "Anthem of a Reluctant Prophet" by Joanne Proulx

At the last second, both instead ducked for cover, turtling with their arms around their heads.

From Los Angeles Times ● Jun. 26, 2025

Far Tortuga is a treatise on turtling, an account of the dying days of sailing ships on unspoiled waters, and a history of a locale that winter tourists tripping through the Caribbean rarely see.

From Time Magazine Archive

The natives must have left the island either on account of its being now the turtling season, or else from the want of water.

From Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2 by MacGillivray, John

Last Friday a small turtling schooner arrived from the Windward Passages, reporting that they had seen a wreck ashore near Tête de Chien on the island of Tortuga, off the north-west coast of Saint Domingo.

From A Middy of the King A Romance of the Old British Navy by Hodgson, Edward S.

She has to procure nearly all the food for herself and husband, except during the turtling season, and on other occasions when the men are astir.

From Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2 by MacGillivray, John

Related Words

• tortoise