Meaning of watershed

Definition of watershed

(noun) a ridge of land that separates two adjacent river systems
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet; "flood control in the Missouri basin"
an event marking a unique or important historical change of course or one on which important developments depend; "the agreement was a watershed in the history of both nations"

Other information on watershed

WIKIPEDIA results for watershed
Amazon results for watershed