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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the fuselage that provides lift for the machine, with forward propulsion being provided by a conventional propeller: superseded in most applications by the helicopter.
historical examples

climbing out of the autogiro they walked towards the center of the island where the sand was soft and the underbrush thick.
linda carlton’s island adventure edith lavell

“i am going to buy an autogiro,” she announced, with decision.
linda carlton’s island adventure edith lavell

fly around all the islands near the georgia coast, keeping a sharp look-out for the autogiro.
linda carlton’s island adventure edith lavell

and an autogiro ought to be especially adapted for this kind of thing.
linda carlton’s island adventure edith lavell

“i feel as if the okefenokee swamp were my home,” she remarked, as she headed the autogiro in that direction.
linda carlton’s island adventure edith lavell

or rather, the top of the autogiro, for it was not wholly visible.
linda carlton’s island adventure edith lavell

“then first we’ll help you get your bag out of the autogiro, miss carlton,” offered jackson.
linda carlton’s island adventure edith lavell

so she meekly inspected the autogiro and climbed into the c-ck-pit.
linda carlton’s island adventure edith lavell

suddenly linda spied a pile of articles near the spot where the autogiro had taken off.
linda carlton’s island adventure edith lavell

in silence they buried the treasure and returned to the autogiro.
linda carlton’s island adventure edith lavell

noun (pl) -ros
a self-propelled aircraft supported in flight mainly by unpowered rotating horizontal blades also called gyroplane compare helicopter