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Free board

 - 2 dictionary results

free⋅board

[free-bawrd, -bohrd]
–noun
1. Nautical.
a. the distance between the level of the water and the upper surface of the freeboard deck amidships at the side of a hull: regulated by the agencies of various countries according to the construction of the hull, the type of cargo carried, the area of the world in which it sails, the type of water, and the season of the year. Compare load line.
b. (on a cargo vessel) the distance between the uppermost deck considered fully watertight and the official load line.
c. the portion of the side of a hull that is above the water.
2. Civil Engineering. the height of the watertight portion of a building or other construction above a given level of water in a river, lake, etc.

Origin:
1670–80; free + board; trans. of F franc bord
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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free·board   (frē'bôrd', -bōrd')   
n.  
  1. Nautical The distance between the water line and the freeboard deck of a ship.

  2. The distance between normal water level and the top of a structure, such as a dam, that impounds or restrains water.

  3. The distance between the ground and the undercarriage of an automobile.


[Probably ultimately partial translation of Anglo-Norman franc bord, land claimed outside the fence of a park or forest : franc, free + bord, bort, border; see border.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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