rotor

from WordNet (r) 3.0 (2006)

rotor
    n 1: the rotating armature of a motor or generator [syn:
         {rotor}, {rotor coil}] [ant: {stator}, {stator coil}]
    2: the revolving bar of a distributor
    3: rotating mechanism consisting of an assembly of rotating
       airfoils; "there are horizontal rotors on a helicopter or
       compressor rotors in a jet engine"

from The Collaborative International Dictionary of English v.0.48

Rotor \Ro"tor\, n. (Elec.)
   The rotating part of a generator or motor. Contrasted with
   {stator}, the stationary part.
   [Webster 1913 Suppl. +PJC]

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "rotor":
      airscrew, carousel, disk, driver, fan, impeller, merry-go-round,
      paddle wheel, piston, prop, propellant, propeller, propulsor,
      roller, rolling stone, rotator, roundabout, rundle, screw,
      screw propeller, top, turbine, twin screws, wheel, whirlabout,
      whirler, whirligig

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