Definitions

1. noun

A type of rotorcraft that uses unpowered rotor blades for lift and a propeller or fanjet for propulsion.

“The inventor created an autogiro that could reach high speeds while maintaining stability.”

2. noun

An early form of helicopter, typically with a single rotor and no tail rotor.

“The autogiro was a precursor to modern helicopters, paving the way for their development.”