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Chief of Staff

noun

  1. the senior officer of the U.S. Army or Air Force, a member of the Joint Chiefs of Staff, responsible to the secretary of a service branch.
  2. (lowercase) the senior or principal staff officer in a brigade or division or higher unit in the U.S. Army or Marine Corps, in a numbered unit in the U.S. Air Force, or in a unit in the U.S. Navy commanded by a rear admiral or one of higher rank.
  3. (lowercase) the senior officer in command of a general staff, especially that of the military forces of a nation.
  4. (lowercase) the head of any staff:

    the chief of staff for the First Lady.



Chief of Staff

noun

  1. the senior staff officer under the commander of a major military formation or organization
  2. the senior officer of each service of the armed forces
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of Chief of Staff1

First recorded in 1880–85

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