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A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
cen•ter•board(ˈsɛn tərˌbɔrd, -ˌboʊrd)
a pivoted fin keel on a sailboat that can be retracted.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||centerboard - a retractable fin keel used on sailboats to prevent drifting to leeward|
daggerboard - a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel
fin keel - a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
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