This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A rotating part of an electrical or mechanical device.

n. An assembly of rotating horizontal airfoils, as that of a helicopter.

n. A rotating part of a mechanical device, for example in an electric motor, generator, alternator or pump.

n. The wing of a helicopter or similar aircraft

n. The rotating part of a generator or motor. Contrasted with stator, the stationary part.

n. A quantity having magnitude, direction, and position.

n. In electricity, the revolving element of an electric machine.

n. The revolving part of a steam-turbine. It consists of the shaft and the disks carrying the buckets on which the steam pressure acts.

n. rotating mechanism consisting of an assembly of rotating airfoils

n. the revolving bar of a distributor

n. the rotating armature of a motor or generator

"When the rotor is straight, the brakes will work better and your quad may even be slightly faster, as rolling resistance will be eliminated."

stator   

bar    armature   

squirrel-cage rotor   

stator   

floater    locomotor    motor    promoter    voter   

propeller    turbine    stator    fuselage    axle    armature    piston    adjustable    spindle    screw