au·to·gi·ro also au·to·gy·ro (ô t -j  r)n. pl. au·to·gi·ros also au·to·gy·ros An aircraft powered by a conventional propeller and supported in flight by a freewheeling, horizontal rotor that provides lift. [Originally a trademark.] |
autogiro or autogyro
Noun
pl -ros a self-propelled aircraft resembling a helicopter but with an unpowered rotor
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  autogiro - an aircraft that is supported in flight by unpowered rotating horizontal wings (or blades); forward propulsion is provided by a conventional propellerheavier-than-air craft - a non-buoyant aircraft that requires a source of power to hold it aloft and to propel it |
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