What is President ?
President is (noun) 1. the head of a republic President Bush was elected in 2000. The French president came on an official visit. (NOTE: also used as a title before a surname: President Wilson) 2. the chief member of a club We’re wondering who’ll be the next president of the cricket club. A. B. Smith was elected president of the sports club.
source: Easier English, Student Dictionary Upper Intermediate Level