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
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—
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The work aims to connect planned roundabouts and install a waterline, pavement, curb and gutter, sidewalk and a drainage system, according to a March 5 North Carolina Department of Transportation news release.
—Joe Marusak
may 14, Charlotte Observer, 14 May 2026
Above the shimmering waterline, a pair of slick gray dorsal fins emerge—a mother swimming alongside her child.
—Hannah Towey, Condé Nast Traveler, 22 Apr. 2026
The drastic measures are necessary to keep the Powell waterline high enough to run the power-generation turbines without air getting into the system and causing damage, federal officials say.
—ABC News, 22 Apr. 2026
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K. Thor Jensen, PC Magazine, 19 May 2026
The work aims to connect planned roundabouts and install a waterline, pavement, curb and gutter, sidewalk and a drainage system, according to a March 5 North Carolina Department of Transportation news release.
—Joe Marusak
may 14, Charlotte Observer, 14 May 2026
Above the shimmering waterline, a pair of slick gray dorsal fins emerge—a mother swimming alongside her child.
—Hannah Towey, Condé Nast Traveler, 22 Apr. 2026
The drastic measures are necessary to keep the Powell waterline high enough to run the power-generation turbines without air getting into the system and causing damage, federal officials say.
—ABC News, 22 Apr. 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 22 May. 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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