wa·​ter·​line | \ ˈwȯ-tər-ˌlīn, 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 serrated slopes appear to crumble all the way down to the waterline. Daniel Otis, Sunset, "Awe-Inspiring Canadian Rockies Camping Adventure," 22 Jan. 2018 Pictures showed both radar panels just above the waterline. Kyle Mizokami, Popular Mechanics, "That Wrecked Norwegian Frigate Is Pretty Much Toast," 13 Nov. 2018 The state of Michigan settled a lawsuit last year agreeing to spend $87 million to rip up and replace miles of waterlines leading to at least 18,000 Flint homes by Jan. 1, 2020. NBC News, "Lead crisis: Flint braces as Michigan shuts down free bottled water sites," 9 Apr. 2018 For Haddish's eyes, Wynn used a waterproof black kohl eyeliner in the waterline and along the top lashes, which were enhanced with two pairs of Ardell Double Up Wispies false eyelashes. Marci Robin, Allure, "Exclusive: These Are the Exact Makeup Products Tiffany Haddish Wore to the 2018 Emmy Awards," 18 Sep. 2018 The explosion killed 17 sailors, injured 39 others, and created a gaping 40 by 60 foot hole in the ship's hull at the waterline. Kyle Mizokami, Popular Mechanics, "The USS Fitzgerald Is Built to Take Abuse," 19 June 2017 To create ceiling heights of 8 feet or more on both levels, Mr. van Ommeren weighted the boat, pushing the lower level farther below the waterline to add interior space. J.s. Marcus, WSJ, "Rock ’n’ roll Living on a Nautical Man Cave," 14 Nov. 2018 Finish the look with black liner on your lash and waterline, then generously apply mascara and use a curler on your lashes. Zoë Weiner, Teen Vogue, "Bella Hadid Wore a Glittery Smoky Eye During Paris Fashion Week," 26 Sep. 2018 Ditches and even pits with spikes were hidden just below the waterline. Ken Jennings, Condé Nast Traveler, "Moses Bridge: The Netherlands' Bridge Under Troubled Water," 6 Aug. 2018

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

15 Jan 2019

Look-up Popularity

Time Traveler for waterline

The first known use of waterline was circa 1625

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More Definitions for waterline



English Language Learners Definition of waterline

the waterline : the level that water reaches on the side of a ship

: 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, 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

More from Merriam-Webster on waterline

Rhyming Dictionary: Words that rhyme with waterline

Comments on waterline

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tremendous in size, volume, or degree

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