from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The adjustable keel on a small yacht or dinghy that acts, among other things, as ballast and to counteract the sideways force of the wind.
from the GNU version of the Collaborative International Dictionary of English
- n. same as centerboard.
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
From centre + board. (Wiktionary)