chief of staff
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- the head member of the staff officers of a division or higher unit in the armed forces, or of the Departments of the Army or Air Force
- the head of any staff; esp., the head of the physicians and surgeons of a hospital
Used by arrangement with John Wiley & Sons, Inc.
noun pl. chiefs of staff Abbr. C. of S. or CSThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- The ranking officer of the U.S. Army or Air Force, responsible to the secretary of his or her branch and to the President.
- The senior military staff officer at the division level or higher.