- a seaplane.
- an attachment to an airplane enabling it to glide on the water.
- a light, high-powered boat, especially one with hydrofoils or a stepped bottom, designed to plane along the surface of the water at very high speeds.
- a horizontal rudder for submerging or elevating a submarine.
- to skim over water in the manner of a hydroplane.
- to travel in a hydroplane.
- (of a vehicular tire or vehicle) to ride on a film of water on a wet surface with a resulting decrease in braking and steering effectiveness.
- a motorboat equipped with hydrofoils or with a shaped bottom that raises its hull out of the water at high speeds
- an attachment to an aircraft to enable it to glide along the surface of water
- another name (esp US) for a seaplane
- a horizontal vane on the hull of a submarine for controlling its vertical motion
- (of a boat) to rise out of the water in the manner of a hydroplane