To co chair is defined as to be jointly in charge of something, such as planning an event, with another person.
(verb)An example of co chair is when you and your sister throw a benefit.
The definition of a co chair is a person who is jointly in charge of something, such as planning an event, with another person.
(noun)An example of a co chair is a person who, along with his sibling, plans and holds a fund raiser.
See co-chair in Webster's New World College Dictionary
noun
transitive verb
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