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English word:    

hydrofoil

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hydrofoil in WordNet English dictionary

noun
  1. 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"
    hydrofoil  foil 
  2. a speedboat that is equipped with winglike structures 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"
    hydrofoil  hydroplane 
WordNet Lexical Database v3.0, © 2006 Princeton University


hydrofoil in English Wiktionary

 
  1. (noun) (nautical) A wing attached to the hull of a ship that raises it out of the water when travelling at speed and thus reduces drag.
  2. (noun) (nautical) A vessel equipped with such a device.
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