WordNet (r) 3.0 (2006):
Chief Executive n 1: the person who holds the office of head of state of the United States government; "the President likes to jog every morning" [syn: President of the United States, United States President, President, Chief Executive] 2: the office of the United States head of state; "a President is elected every four years" [syn: President of the United States, President, Chief Executive]