from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The level of the surface of a body of water.
  • n. Geology See water table.
  • n. The water line of a ship.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The level of a body of water, especially when measured above a datum line
  • n. The level of the water table below ground
  • n. The waterline of a ship

from the GNU version of the Collaborative International Dictionary of English

  • The level formed by the surface of still water.
  • A kind of leveling instrument. See under Level, n.
  • n. an instrument to show the level by means of the surface of water in a trough, or in upright tubes connected by a pipe.

from The Century Dictionary and Cyclopedia

  • n. In mining, a heading or gangway so nearly horizontal that drainage water in it flows very sluggishly or hardly at all.
  • n. The surface of the water in any vessel or reservoir, natural or artificial, in which water is standing, as in a well, canal, pond, lake, etc.; also, the plane of saturation beneath the surface of the ground, or the plane below which the soil or rock remains saturated with water under the ordinary conditions of rainfall, etc.
  • n. A leveling-instvument in which water is emploved instead of mercurv or spirit of wine.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. underground surface below which the ground is wholly saturated with water
  • n. 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
  • n. a water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube
  • n. the level of the surface of a body of water


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