Autogyro

n. aircraft that is supported in flight by an unpowered rotary wing or rotor and is moved through the air by either an engine-powered propeller or a tow cable

An autogyro is a type of rotorcraft invented by Juan de la Cierva in 1919, making its first successful flight on January 9, 1923 at Cuatro Vientos Airfield in Madrid, Spain. The lift for an autogyro is provided by a rotor, similar to that of a helicopter. Unlike a helicopter, the rotor of an autogyro is driven by aerodynamic forces alone, once it is in flight. Thrust for the autogyro is provided by an engine-powered propeller similar to that of a fixed-wing aircraft.
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Noun
1. an aircraft that is supported in flight by unpowered rotating horizontal wings (or blades); forward propulsion is provided by a conventional propeller
(synonym) autogiro, gyroplane
(hypernym) heavier-than-air craft

autogyro /'ɔ:tou'dʤaiərou/ (autogiro) /'ɔ:tou'dʤaiərou/
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AUTOGIRO [AEREI]. GIROPLANO [AEREI]