hydrofoil

(drə fo̵il′)

noun

  1. 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
  2. a craft with hydrofoils

Origin: hydro- + (air)foil

See hydrofoil in American Heritage Dictionary 4

noun
  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 boat equipped with hydrofoils. Also called hydroplane.

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