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

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.
The pool cleaner’s waterline skimming feature is a massive time saver. Stephanie Osmanski, Better Homes & Gardens, 11 July 2025 The 5-in-1 cleaning technology tackles various pool surfaces, including walls, floors, and waterlines, while also purifying the water. Jason Phillips, USA Today, 17 May 2025 Kulfi brings the practice into the present day with this smudge-proof color that glides skillfully onto lids and waterlines. Annie Blackman, Allure, 26 Mar. 2025 The hard-to-miss color carried down in her waterlines, while her pursed lips were painted in a light gloss. Kaleigh Werner, Footwear News, 17 June 2025 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

Browse Nearby Words

Cite this Entry

“Waterline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterline. Accessed 18 Jul. 2025.

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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