- any of the winglike structures attached to the hull of some watercraft: at a certain speed the hull is lifted above the water and the craft skims along on the hydrofoils at great speeds
- a craft with hydrofoils
Origin of hydrofoilhydro- + (air)foil
- A winglike structure attached to the hull of a boat that raises all or part of the hull out of the water when the boat is moving forward, thus reducing drag.
- A boat equipped with hydrofoils. Also called hydroplane.
hydro- + foil