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

b

: shoreline sense 1

Examples of waterline in a Sentence

We repaired the hull below the waterline.

Recent Examples on the Web

Whether doing waterline eyeliner, defining your upper lashes, or blending broad strokes into eyeshadow-esque coverage, this liner is ready to play. —Annie Blackman, Allure, 26 Mar. 2025

The advisory was issued as a precaution Friday after a waterline break caused pressure loss in a localized area, the Kansas City Board of Public Utilities said in a statement. —Kendrick Calfee, Kansas City Star, 1 Feb. 2025

Leighton Meester’s lids were covered in silvery flecks of shimmer that popped against the bronze eyeliner used on her waterline. —Claire Sullivan, WWD, 6 Jan. 2025

Hadid used a brown shade from the Kylie Cosmetics palette to create a subtle smokey look along her lower waterline. —Jennifer Hussein, Allure, 12 Feb. 2025

Word History

First Known Use

circa 1625, in the meaning defined above

Phrases Containing waterline

• the waterline

Rhymes for waterline

• acridine
• alkaline
• andesine
• anodyne
• anticline
• arginine
• asinine
• atropine
• benzidine
• borderline
• byzantine
• calamine

Kids 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