Definitions
1.NounA rotating part of a mechanical device; for example, in an electric motor, generator, alternator, or pump. .mw-parser-output .defdate{font-size:smaller}
In a disc brake, the metal disc attached to the wheel hub.
The wing of a helicopter or other rotary-wing aircraft.
2.NounIn a disc brake, the metal disc attached to the wheel hub.
3.NounThe wing of a helicopter or other rotary-wing aircraft.
4.NounA type of powerful horizontal-axis atmospheric vortex generated by the interaction of strong winds with mountainous terrain.
5.NounA quantity having magnitude, direction, and position.
6.NounThe set of cells within an oscillator that switch between being alive and dead over the course of the oscillator's period.
7.NounAn 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.