leatherback

noun

leath·​er·​back ˈle-t͟hər-ˌbak How to pronounce leatherback (audio)
: the largest existing sea turtle (Dermochelys coriacea) distinguished by its flexible carapace composed of a mosaic of small bones embedded in a thick leathery skin

Illustration of leatherback

Illustration of leatherback

Examples of leatherback in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
From February to September, guests may even catch a glimpse of giant leatherback turtles that lay their eggs on the resort’s golden shores. Amber Kallor, Travel + Leisure, 10 Jan. 2026 The largest leatherback ever recorded was almost 10 feet in length and weighed 2,019 pounds, the National Park Service reports. Mark Price, Charlotte Observer, 8 Dec. 2025 Stephanie’s work has taken her around the world; from camping on the Greenland Ice Sheet during a snowstorm and aurora hunting from the remote northern shores of Isle Royale National Park to monitoring nesting leatherback turtles alongside Indigenous conservationists on Panama’s Caribbean coast. Stephanie Vermillion, Outside, 6 Oct. 2025 But Florida is a nesting destination for endangered or threatened sea turtles, including loggerheads, green turtles, leatherbacks and Kemp’s Ridley turtles, the Florida Fish and Wildlife Conservation Commission reports. Mark Price, Miami Herald, 18 Sep. 2025 See All Example Sentences for leatherback

Word History

First Known Use

circa 1855, in the meaning defined above

Time Traveler
The first known use of leatherback was circa 1855

Browse Nearby Words

Cite this Entry

“Leatherback.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leatherback. Accessed 20 Jan. 2026.

Kids Definition

leatherback

noun
leath·​er·​back ˈlet͟h-ər-ˌbak How to pronounce leatherback (audio)
: the largest existing sea turtle with a shell composed of small bones embedded in a thick leathery skin
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!