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.