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Noun: centreboard  'sen-tu(r),bord
Usage: Brit, Cdn (US: centerboard)
  1. A retractable fin keel used on sailboats to prevent drifting to leeward
    - centerboard [US], drop keel, sliding keel

Derived forms: centreboards

Type of: fin keel

Part of: sailboat [N. Amer], sailing boat [Brit]

Encyclopedia: Centreboard