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

  • n. A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative spelling of centreboard.

from the GNU version of the Collaborative International Dictionary of English

  • n. A retractable or sliding keel used on sailboats, formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent drifting to leeward when the vessel is beating to windward. It is used in vessels of all sizes along the coast of the United States.

from The Century Dictionary and Cyclopedia

  • n. A shifting keel passing through a slot in a boat's bottom and swinging on a pin at the forward lower corner.

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

  • n. a retractable fin keel used on sailboats to prevent drifting to leeward


Sorry, no etymologies found.


  • A centerboard is a wooden or metal fin housed in a centerboard trunk.

    Sailing Fundamentals

  • Of all things mechanical, he loved sailboats the most, planing into the wind with a sheet of canvas, a centerboard and a tiller, which he picked up from perusing the Horatio Hornblower novels.

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  • By saving money, by earning more, and by each of us foregoing a bicycle on his birthday, we had collected the purchase price of the Mist, a beamy twenty-eight-footer, sloop-rigged, with baby topsail and centerboard.

    To Repel Boarders

  • A centerboard-case divided the room in half longitudinally, and to this was attached the hinged table from which they ate.


  • There was a table in the center which was split by a centerboard slot.

    Boats Owned By Writer Jack London:Jack London's Ranch Album

  • A curtain, easily attached by hooks between the centerboard-case and the roof, at night screened Mrs. Hastings 'sleeping quarters.


  • The boat was a Raven, it was an open, centerboard boat and all my sailing, with the exception of a few races in a Laser, were all on large, ocean type, keel boats.

    Organic Kiwis and Sailboats.

  • You wouldn't have seen that sailboat on there three years ago before the renovations, because the weeds would have been grabbing its centerboard and it probably would have been in constant danger of running aground!

    Photo of the Weekend: Wascana Lake

  • He dropped the centerboard and un-lashed the mast from the side of the boat.

    Reiffeins Choice

  • Buttersworth's oil painting depicts the 93-foot centerboard schooner, Atalanta, racing in the New York Yacht Club's Autumn Regatta of 1875.

    Water Color Water Color


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