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English to English noun
| 1 |
an airplane that can land on or take off from water |  | Example: the designer of marine aircraft demonstrated his newest hydroplane
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
| 3 |
A plane, or any of a number of planes, projecting from the hull of a submarine boat, which by being elevated or depressed cause the boat, when going ahead, to sink or rise, after the manner of an aëroplane. | | source: webster1913 verb
| 4 |
glide on the water in a hydroplane | | source: wordnet30
| 5 |
Of a boat, to plane (see Plane, below). | | source: webster1913
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