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English to English noun
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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 |  | Example: the fins of a fish act as hydrofoils
source: wordnet30
| 2 |
a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | | Example: the museum houses a replica of the jet hydroplane that broke the record
source: wordnet30
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