1. Plural of daggerboard; retractable flat boards or fins that can be lowered through a slot in the hull of a sailboat to provide lateral resistance and prevent sideways drift.
Usage: nautical; plural form; also called centerboards in some contexts

Examples

• The sailor lowered the daggerboards to improve the boat's stability in the light wind.
• Modern racing dinghies often use daggerboards instead of fixed keels.
• She checked that both daggerboards were fully retracted before beaching the boat.
• The daggerboards can be quickly raised when sailing in shallow water.
• Daggerboards help reduce the sideways slip of the hull through the water.