The Collaborative International Dictionary of English v.0.48:

Chair \Chair\, v. t. [imp. & p. p. Chaired; p. pr. & vb. n.
   Chairing.]
   1. To place in a chair.
      [1913 Webster]

   2. To carry publicly in a chair in triumph. [Eng.]
      [1913 Webster]

   3. To function as chairperson of (a meeting, committee,
      etc.); as, he chaired the meeting.
      [PJC]