or autogyro noun (plural -ros) Etymology: from Autogiro, a trademark Date: 1923 a rotary-wing aircraft that employs a propeller for forward motion and a freely rotating rotor for lift
AUTOGIRO
Meaning of AUTOGIRO in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012