fin keel

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fin keel

n
(Nautical Terms) a projection from the keel of a vessel to give it additional stability
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Noun1.fin keel - a metal plate projecting from the keel of a shallow vessel to give it greater lateral stabilityfin keel - a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
centerboard, centreboard, drop keel, sliding keel - a retractable fin keel used on sailboats to prevent drifting to leeward
keel - one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
plate - a sheet of metal or wood or glass or plastic