wa·​ter·​line ˈwȯ-tər-ˌlīn How to pronounce waterline (audio)
: a line that marks the level of the surface of water on something: such as
: the point on the hull of a ship or boat to which the water rises
: 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 Remnants of black eyeliner around her eyes and in her waterline remained. Gabi Thorne, Allure, 30 Aug. 2023 Her hair was wavy and voluminous, and her makeup was on the edgier side, with black eyeliner in her waterline and a bronzed smokey eye look. Briannah Rivera, Seventeen, 18 July 2023 Featuring a high-performance hull with a long waterline and a reverse bow, this example is equipped with two 250 kW electric motors that enable a maximum speed of 14 knots and a cruising speed of between six and eight knots. Rachel Cormack, Robb Report, 6 Feb. 2023 Daley smoked out dark pigments on her lids and waterline area. Gabi Thorne, Allure, 27 June 2023 That water remains in storage, merely shifted downstream to Lake Mead, but fears about Lake Powell's plunging waterline had prevented such a flood for years. Brandon Loomis, The Arizona Republic, 5 May 2023 Through continuous efforts, the Town has gotten several million dollars over the past several years for water system projects, including: sewer pipe lining, pump station replacement/repair, loan reduction/forgiveness, the main waterline replacement, and other repairs. Thomas Goodwin Smith, Baltimore Sun, 5 May 2023 The unit's waterline mode is a must for protecting decorative tiles around the pool perimeter and keeping them clean. Jamie Weissman, Better Homes & Gardens, 18 Apr. 2023 At El Capitán, storms damaged waterlines, some of which still await repair, according to the state parks’ website. Terry Castleman, Los Angeles Times, 15 June 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'waterline.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1625, in the meaning defined above

Time Traveler
The first known use of waterline was circa 1625

Dictionary Entries Near waterline

Cite this Entry

“Waterline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterline. Accessed 23 Sep. 2023.

Kids Definition


wa·​ter·​line ˈwȯt-ər-ˌlīn How to pronounce waterline (audio)
: a line marked on the outside of a ship that matches the surface of the water when the ship floats evenly
Last Updated: - Updated example sentences
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