Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun centreboard

1 sense of centreboard

Sense 1
centerboard, centreboard, drop keel, sliding keel -- (a retractable fin keel used on sailboats to prevent drifting to leeward)
       => fin keel -- (a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability)