wa·​ter·​line | \ ˈwȯ-tər-ˌlīn How to pronounce waterline (audio) , ˈwä-\

Definition of waterline

: a line that marks the level of the surface of water on something: such as
a(1) : the point on the hull of a ship or boat to which the water rises
(2) : a line marked on the outside of a ship that corresponds with the water's surface when the ship is afloat on an even keel under specified conditions of loading

Examples of waterline in a Sentence

We repaired the hull below the waterline.

Recent Examples on the Web

The llama was spotted at the waterline of East Matunuck State Beach in South Kingstown on June 29. USA TODAY, "Roller coaster ghost town, Alaska heat, rock hyrax pups: News from around our 50 states," 8 July 2019 The waterline is the boundary between the stated and implied, our consciousness and our dreams. Amanda Hess, New York Times, "Women Crash the Pool Party," 3 July 2019 Much of the reconstruction is being done below the waterline, including a new keel that will run the length of the boat. Brian Macquarrie, BostonGlobe.com, "A version of the boat that carried the Pilgrims from the Mayflower to the shore is getting a makeover," 23 June 2019 Within about 45 minutes Thursday morning, the two tankers were hit by projectiles at the waterline with sufficient force to set them on fire but not sink them. The Editorial Board, WSJ, "The Iranian Tanker Attacks," 13 June 2019 After transferring the captives to a riverboat owned by Meaher’s brother, Foster burned the slaver to the waterline to hide their crime. National Geographic, "Last American slave ship is discovered in Alabama," 22 May 2019 Apply white or beige liner along the waterline or pop on an eye mask to help. Sarah Ferguson, Marie Claire, "3 Spots You're Forgetting About When Getting Ready," 11 Dec. 2018 With onyx along the lash line, extending in a wing that swung outward from each eye, Prinsloo also applied liquid liner on the inner corners alone, leaving the waterline untouched. Calin Van Paris, Vogue, "Behati Prinsloo Has the Simplest Trick for Cool-Girl Eyeliner," 6 June 2019 Farther east in the Columbia River Gorge, one of the consequences of the river’s power-generating capabilities lies hidden below the waterline. Corey Arnold, National Geographic, "Why wild salmon remains king in the Pacific Northwest," 27 Mar. 2019

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

circa 1625, in the meaning defined above

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Statistics for waterline

Last Updated

16 Jul 2019

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Time Traveler for waterline

The first known use of waterline was circa 1625

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English Language Learners Definition of waterline

: the level that water reaches on the side of a ship
US : a horizontal mark on a wall or other surface that was made by water during a flood and that shows how high the water was


wa·​ter·​line | \ ˈwȯ-tər-ˌlīn How to pronounce waterline (audio) , ˈwä-\

Kids Definition of waterline

: any of several lines marked on the outside of a ship that match the surface of the water when the ship floats evenly

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Rhyming Dictionary: Words that rhyme with waterline

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