daggerboard
/ˈdæɡər bɔrd/
noun
- A removable vertical board or fin that slides through the hull of a sailboat to prevent sideways drift.
- The small sailboat's daggerboard was made of lightweight wood.
- He lowered the daggerboard to keep the boat from sliding sideways in the wind.
- Before beaching the boat, they pulled up the daggerboard to avoid damage.
Synonyms