<p><strong>Noun</strong></p><ul><li>the presiding officer of a meeting, committee, board, etc.</li><li>the administrative head of a department in a high school, college, or university.</li><li>someone employed to carry or wheel a person in a chair.</li></ul><p><strong>Verb</strong></p><ul><li>to act as or be chairman of (a meeting, committee, etc.).</li></ul>