Chair

1. A movable single seat with a back.
2. An iron block used on railways to support the rails and secure them to the sleepers.
3. A vehicle for one person; either a sedan borne upon poles, or two-wheeled carriage, drawn by one horse; a gig.
4. The presiding officer of an assembly; a chairman; as, to address the chair.
5. To carry publicly in a chair in triumph.
6. To place in a chair.
7. An official seat, as of a chief magistrate or a judge, but esp. that of a professor; hence, the office itself.