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water line

or waterline

Nautical. the part of the outside of a ship's hull that is just at the water level.
Naval Architecture. any of a series of lines on the hull plans of a vessel representing the level to which the vessel is immersed or the bottom of the keel.
the line in which water at its surface borders upon a floating body.
water level (def 2).
Also called watermark. a line indicating the former level or passage of water:
A water line all around the cellar served as a reminder of the flood.
a pipe, hose, tube, or other line for conveying water.
Origin of water line
1615-25 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for water-line
Historical Examples
  • The Sybarite had received several shots below her water-line, and the Red Galleon had her tree cut in two.

    The Knight of Malta Eugene Sue
  • She struck the 343 above her water-line and pretty well aft.

    The U-boat hunters James B. Connolly
  • About eight feet in diameter at the water-line, it tapered to two feet across its flat top, seven feet above.

    Jim Spurling, Fisherman Albert Walter Tolman
  • Her armour-plating reached to five feet below the water-line.

    Man on the Ocean R.M. Ballantyne
  • A hole would have been of no use to me, unless it entered below the water-line.

    The Boy Tar Mayne Reid
  • It left the ship glistening from trucks to water-line, and with darkened sails.

  • The bearded man splashed through the water, and looked eagerly at the gold lying just above the water-line.

  • The water-line is strewn with cast-off salmon heads and entrails.

    Over the Rocky Mountains to Alaska Charles Warren Stoddard
  • The aim is supposed to be taken at the water-line of a ship.

  • As originally planned, the Snark was to be forty feet long on the water-line.

British Dictionary definitions for water-line

water line

a line marked at the level around a vessel's hull to which the vessel will be immersed when afloat
a line marking the level reached by a body of water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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