chair

noun

• 1a separate seat for one person, typically with a back and four legs.
• short for chairlift.
• (the chair)short for electric chair.

• 2the person in charge of a meeting or organization (used as a neutral alternative to chairman or chairwoman):a three-year term as the board’s deputy chair
• an official position of authority, for example on a board of directors:the editorial chair
• (also chair umpire) Tennisanother term for umpire.

• 3a professorship:he held a chair in physics

• 4a particular seat in an orchestra: [as modifier, in combination]:she was fourth-chair trumpet

• 5chiefly British a metal socket holding a railroad rail in place.

verb

• 1act as chairperson of or preside over (an organization, meeting, or public event).

• 2British carry (someone) aloft in a chair or in a sitting position to celebrate a victory.