Definition of "co-chair" []

• One of a group of chairpersons. (noun)
• To serve as a co-chair (on). (verb)

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• ""Some have had a mindset that you are just trying to downplay all that is Confederate," says Keith Hardison, co-chair of North Carolina's Civil War 150th anniversary committee, which ordered Mr. Howard's study."
• "The festivities began with a brief introduction by Anthony M. Carvette board member and co-chair of the event."
• "John Podesta, co-chair of the Obama-Biden Presidential Transition Team, wrote a letter asking Congress to delay the cutover until a number of problems can be addressed."