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

• knee-jerk reflex
• knee-length
• knee-trembler
• kneecap
• kneed
• kneel
• kneeler
• kneeling
• kneepan
• knees-up
• knell
• Knesset
• Knesseth
• knickerbocker glory
• knickerbockers
• knickers
• knickknack
• knickknackery
• knife
• knife blade
• knife fight
• knife pleat
• knife thrust
• knife-edge
• knife-handle