Hydrofoil
Part of speech: noun
Definition: A wing attached to the hull of a ship that raises it out of the water when travelling at speed and thus reduces drag. A vessel equipped with such a device.
Hydroplane
Part of speech: verb
Definition: To skim the surface of a body of water while moving at high speed.
Part of speech: noun
Definition: A specific type of motorboat used exclusively for racing.A hydrofoilA seaplaneThe wing of a submarine, used to help control depth.