A chair is defined as a piece of furniture for one person to sit on.(noun)
An example of chair is what someone would sit on while seated around a dining table.
The definition of a chair is an official person or one who directs the course of a meeting.(noun)
An example of a chair is the facilitator at a conference.
See chair in Webster's New World College Dictionary
Origin: ME & OFr chaire < L cathedra: see cathedra
See chair in American Heritage Dictionary 4
Origin: Middle English chaiere
Origin: , from Old French
Origin: , from Latin cathedra; see cathedra.
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