Chief of Staff
- 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.
- (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.
- (lowercase) the senior officer in command of a general staff, especially that of the military forces of a nation.
- (lowercase) the head of any staff: the chief of staff for the First Lady.
Origin of Chief of Staff
First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for chief of staff
He was a hard-nosed realist with impeccable military credentials: Palmach hero, IDF Chief-Of-Staff and Defense Minister.Netanyahu's Studied Ambiguity
January 21, 2013
The General turned an arch smile of perplexity upon his chief-of-staff.
The chief-of-staff smiled, but the General darkened and pressed his questions.
When the commander is disabled, the chief-of-staff continues the action.
The insufficiency, the inadequacy of his staff and of chief-of-staff.
It seems that now a general commands, and has at his side a chief-of-staff.
Chief of Staff
- the senior staff officer under the commander of a major military formation or organization
- the senior officer of each service of the armed forces
Abbreviation: C of S, COS
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