autogyro
/ˌɔːtoʊˈdʒaɪroʊ/
noun
- A type of aircraft that uses an unpowered rotor for lift and a separate engine-driven propeller for forward thrust.
- The pilot flew the autogyro low over the fields to inspect the crops.
- My uncle restored a vintage autogyro and took it to airshows.
- Unlike a helicopter, an autogyro's rotor spins freely as it moves forward.