waterline

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a line corresponding to the surface of the water when the vessel is afloat on an even keel; often painted on the hull of a ship

From water + line.

Several times they made use of the inclined planes, which certain internal levers placed obliquely to the waterline. — Twenty Thousand Leagues under the Sea, Jules Verne
Several times we used our slanting fins, which internal levers could set at an oblique angle to our waterline. — Twenty Thousand Leagues Under the Seas: An Underwater Tour of the World, Jules Verne
The HISPANIOLA, in that unbroken mirror, was exactly portrayed from the truck to the waterline, the Jolly Roger hanging from her peak. — Treasure Island, Robert Louis Stevenson

water line, water level

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