waterline
noun
wa·ter·line
ˈwȯ-tər-ˌlīn 
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
Leaves, pollen, insects, and debris accumulate on the water surface, while dirt settles along the pool floor and waterline.
—
Atharva Gosavi, Interesting Engineering, 27 Mar. 2026
The water from the 24-inch bypass was no longer reaching the lake Tuesday because the bypass was connected at two points to the existing waterline, and the fifth break happened beyond those connections, officials said.
—Claire Osborn, Austin American Statesman, 17 Mar. 2026
Two waterline workers were struck by a vehicle early Thursday in downtown Lawrenceville, leaving one in critical condition and causing several road closures during the morning commute, police said.
—Cbs News Atlanta Digital Team, CBS News, 26 Feb. 2026
As someone with oily skin, pencil liners have always been temperamental—waterline applications fading within hours, lid formulas transferring onto my slightly hooded eyes.
—Conçetta Ciarlo, Vogue, 18 Feb. 2026
See All Example Sentences for waterline
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Atharva Gosavi, Interesting Engineering, 27 Mar. 2026
The water from the 24-inch bypass was no longer reaching the lake Tuesday because the bypass was connected at two points to the existing waterline, and the fifth break happened beyond those connections, officials said.
—Claire Osborn, Austin American Statesman, 17 Mar. 2026
Two waterline workers were struck by a vehicle early Thursday in downtown Lawrenceville, leaving one in critical condition and causing several road closures during the morning commute, police said.
—Cbs News Atlanta Digital Team, CBS News, 26 Feb. 2026
As someone with oily skin, pencil liners have always been temperamental—waterline applications fading within hours, lid formulas transferring onto my slightly hooded eyes.
—Conçetta Ciarlo, Vogue, 18 Feb. 2026
See All Example Sentences for waterline
Cite this Entry
“Waterline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterline. Accessed 2 Apr. 2026.
Copy CitationKids Definition
waterline
noun
wa·ter·line
ˈwȯt-ər-ˌlīn
ˈwät-
: a line marked on the outside of a ship that matches the surface of the water when the ship floats evenly
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