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
Synonyms: foil
Examples:

"the fins of a fish act as hydrofoils"

Related terms: device
2. [ noun ] (nautical,transportation) a speedboat that is equipped with hydrofoils that lift it so that it skims the water at high speeds
Synonyms: hydroplane
Examples:

"the museum houses a replica of the jet hydroplane that broke the record"

Related terms: speedboat hydroplane
Similar spelling:   hydrophobic
  hydrophobia
  hydrophilic
  hydroplane
  hydrops
  Hydrophidae