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sergeant major definition

sergeant major

  1. the chief administrative noncommissioned officer in a military headquarters: an occupational title and not a rank
  2. ☆ U.S. Army, U.S. Marine Corps the highest ranking noncommissioned officer
  3. a small damselfish (Abudefduf saxatilis) with several dark, wide, vertical stripes on its bright-yellowish upper body

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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