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Meaning of rotator

ro•ta•tor

Pronunciation: (rō'tā-tur or, esp. Brit, rō-tā'-), [key]
— pl. ro•ta•tors ro•ta•tor•es
  1. a person or thing that rotates.
  2. a muscle serving to rotate a part of the body.
  3. a bladed device streamed to rotate in the water to actuate a patent log.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.