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fin keel

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noun Nautical.

a finlike projection extending downward from the keel of a sailboat, serving to prevent lateral motion and acting as additional ballast.

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British Dictionary definitions for fin keel

fin keel

noun

a projection from the keel of a vessel to give it additional stability
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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