waterline

noun

wa·​ter·​line ˈwȯ-tər-ˌlīn How to pronounce waterline (audio)
ˈwä-
: 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
b
: shoreline sense 1

Examples of waterline in a Sentence

We repaired the hull below the waterline.
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.
To start, pull back your lashes so your waterline comes into view. — Patricia Shannon, Southern Living, 13 Aug. 2026 Tree and brush removal is underway and waterline relocations have begun, primarily off the road to limit traffic impacts. — Kendrick Calfee, Kansas City Star, 11 Aug. 2026 The Emmy-winning actress appeared with a sharp, smoky eye, made up of bronze shimmer, charcoal, black and navy hues, which melted over her lids and below her waterline. — Kaleigh Werner, Footwear News, 24 July 2026 Zendaya wore a thin ribbon of vibrant red all the way around her eye, hugging the upper lash line and coating her lower waterline, staying unbroken at the inner corner. — Marci Robin, Allure, 20 July 2026 See All Example Sentences for waterline

Word History

First Known Use

circa 1625, in the meaning defined above

Time Traveler
The first known use of waterline was circa 1625

Phrases Containing waterline

Rhymes for waterline

See All Rhymes for waterline

Browse Nearby Words

water lime
waterline
waterline model
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Cite this Entry

“Waterline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterline. Accessed 19 Aug. 2026.

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Kids Definition

waterline

noun
wa·​ter·​line ˈwȯt-ər-ˌlīn How to pronounce waterline (audio)
ˈwät-
: 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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