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Meaning of rotor

ro•tor

Pronunciation: (rō'tur), [key]
— n.
  1. a rotating member of a machine. Cf.(def. 1).
  2. a system of rotating airfoils, as the horizontal ones of a helicopter or of the compressor of a jet engine.
  3. any of a number of tall, cylindrical devices mounted on a special ship and rotated in such a way that the Magnus effect of wind impinging on the cylinders is used to drive and maneuver the vessel.
  4. (in a self-winding watch) a weight eccentrically mounted on an arbor for keeping the mainspring wound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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