society > travel > air or space travel > specific movements or positions of aircraft > fly [verb (intransitive)] > spin or descend with rotor spinning (2)
Aeronautics. Of an aircraft or its pilot: to perform or undergo a spin (spin, n.1 2d).
intransitive. Aeronautics. Of the propeller or rotor of an aircraft: to spin unpowered; to windmill down, to descend with the rotor spinning; also…