hydrofoil

Definitions of hydrofoil
  1. noun
    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
    synonyms: foil
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    type of:
    device
    an instrumentality invented for a particular purpose
  2. noun
    a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds
    synonyms: hydroplane
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    type of:
    speedboat
    a fast motorboat
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