[n] the office of the United States head of state; "a President is elected every four years"
[n] the chief executive of a republic
[n] the person who holds the office of head of state of the United States government; "the President likes to jog every morning"
[n] an executive officer of a firm or corporation
[n] the head administrative officer of a college or university
[n] the officer who presides at the meetings of an organization; "address your remarks to the chairperson"