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Meaning of daggerboard

dag•ger•board

Pronunciation: (dag'ur-bôrd", -bōrd"), [key]
— n. Naut.
  1. a removable board on a small sailboat, typically of small dimension fore and aft, lowered into the water through a trunk to serve as a keel. Cf. centerboard.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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