Definitions from Wiktionary (rotor)

▸ noun:  A rotating part of a mechanical device; for example, in an electric motor, generator, alternator, or pump.
▸ noun:  (aviation) The wing of a helicopter or other rotary-wing aircraft.
▸ noun:  (meteorology) A type of powerful horizontal-axis atmospheric vortex generated by the interaction of strong winds with mountainous terrain.
▸ noun:  A quantity having magnitude, direction, and position.
▸ noun:  (cellular automata) The set of cells within an oscillator that switch between being alive and dead over the course of the oscillator's period.
▸ noun:  An amusement park and carnival ride consisting of a rotating cylindrical chamber in which centrifugal force adheres riders to the wall as the floor drops away, creating a sensation of defying gravity.

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