Auto gyros

autogiro

[aw-tuh-jahy-roh]
noun, plural autogiros.
an aircraft with an unpowered, horizontally rotating propeller on a shaft above the fuselage that provides lift for the machine, with forward propulsion being provided by a conventional propeller: superseded in most applications by the helicopter.
Also, autogyro.
Also called gyrocopter, gyroplane.


Origin:
1920–25; formerly a trademark

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
autogiro or autogyro (ˌɔːtəʊˈdʒaɪrəʊ)
 
n , pl -ros
Compare helicopter Also called: gyroplane a self-propelled aircraft supported in flight mainly by unpowered rotating horizontal blades
 
[C20: originally a trademark]
 
autogyro or autogyro
 
n
 
[C20: originally a trademark]

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