n.1.  A piece of furniture designed to accommodate one sitting or reclining person, providing support for the back and often the arms and typically standing on four legs.
2.  A seat of office, authority, or dignity, such as that of a bishop.
3. a.  An office or position of authority, such as a professorship.
b.  A person who holds an office or a position of authority, such as one who presides over a meeting or administers a department of instruction at a college; a chairperson.
 4.  The position of a player in an orchestra.
5.  Slang   The electric chair.
6.  A seat carried about on poles; a sedan chair.
7.  Any of several devices that serve to support or secure, such as a metal block that supports and holds railroad track in position.
 tr.v.  chaired, 
chair·ing, 
chairs 1.  To preside over as chairperson: chair a meeting.
2.  To install (someone) in a position of authority, especially as a presiding officer.
3.  To carry (someone) high off the ground in a chair or in a seated position, especially as a tribute.