Chair

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

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.