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Noun hydrofoil has 2 senses
- hydrofoil, foil - 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"
--1 is a kind of device
- hydrofoil, hydroplane - a speedboat that is equipped with hydrofoils that lift it so that it skims the water at high speeds; "the museum houses a replica of the jet hydroplane that broke the record"
--2 is a kind of speedboat
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