–n.
1. the person who is in charge of a meeting: »
The chairman called the meeting to order.
2. the person at the head of a committee, board, or other organized body: »
The chairman asked the committee if they wished to recess.
3. a man whose work is carrying or wheeling persons in chairs, sedan chairs, or chairlike conveyances.
–v.t., v.i.
to conduct or serve as chairman: »
He supervised the corporation's financial affairs, chairmanned some of its most important committees (Time).
Useful english dictionary. 2012.