1. co-chair - Noun
2. co-chair - Verb
co-chair (plural co-chairs)
One of a group of chairpersons.
co-chair (third-person singular simple present co-chairs, present participle co-chairing, simple past and past participle co-chaired)
(transitive, intransitive) To serve as a co-chair (on).
As a co-chair of the State's 2010 Olympics Task Force, I am working to make sure our border crossings are ready to handle the risks and benefits the Games will bring. Rick Larsen
As founder and co-chair of the upper Mississippi River Congressional task force, I have long sought to preserve the river's health and historical multiple uses, including as a natural waterway and a home to wildlife, for the benefit of future generations of Americans. Ron Kind
I am a bit biased. I co-chair the campaign effort of George W. Bush. Katherine Harris
I am honored to be here as co-chair of President Obama's re-election campaign. Eva Longoria
I'm the co-chair of the PTA at my kids' school, Ashmount Primary, in north Islington, London. Arabella Weir
As co-chair of the Iraqi Women's Caucus in the House, I've enjoyed the opportunity to collaborate with and hear from Iraqi women elected to serve in the new National Assembly. Ellen Tauscher