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16 points
GYROPLANES is validvalid
GYROPLANE, [n]
GYROPLANE, an airplane balanced and supported by the aerodynamic forces acting on rapidly rotating horizontal or slightly inclined airfoils, also GYROCOPTER [n]
GYROPLANE, [n]
GYROPLANE, an airplane balanced and supported by the aerodynamic forces acting on rapidly rotating horizontal or slightly inclined airfoils, also GYROCOPTER [n]