What is Chaired?

Chaired definition and meaning on Dictionary terms:

a seat, especially for one person, usually having four legs for support and a rest for the back and often having rests for the arms.
something that serves as a chair or supports like a chair: The two men clasped hands to make a chair for their injured companion.
a seat of office or authority.
a position of authority, as of a judge, professor, etc.
the person occupying a seat of office, especially the chairperson of a meeting: The speaker addressed the chair.
(in an orchestra) the position of a player, assigned by rank; desk: first clarinet chair.
the chair, Informal. electric chair.
(in reinforced-concrete construction) a device for maintaining the position of reinforcing rods or strands during the pouring operation.
a glassmaker’s bench having extended arms on which a blowpipe is rolled in shaping glass.
British Railroads. a metal block for supporting a rail and securing it to a crosstie or the like.