hydrofoil Meaning, Definition & Usage

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
   foil.
   
   • the fins of a fish act as hydrofoils
2. noun a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds
   hydroplane.
   
   • the museum houses a replica of the jet hydroplane that broke the record

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