You searched for: “hydrofoil
hydrofoil, hydroplane
1. 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.
2. A device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through: "The fins of a fish act as hydrofoils."
3. A boat equipped with hydrofoils.
This entry is located in the following unit: hydro-, hydra-, hydr-, hyd- (page 6)