The noun president has 6 senses (first 6 from tagged texts)
1. (14) president -- (an executive officer of a firm or corporation)
2. (5) President of the United States, United States President, President, Chief Executive -- (the person who holds the office of head of state of the United States government; "the President likes to jog every morning")
3. (5) president -- (the chief executive of a republic)
4. (3) president, chairman, chairwoman, chair, chairperson -- (the officer who presides at the meetings of an organization; "address your remarks to the chairperson")
5. (3) president, prexy -- (the head administrative officer of a college or university)
6. (1) President of the United States, President, Chief Executive -- (the office of the United States head of state; "a President is elected every four years")