1. [ noun ] (geography) a line that divides two adjacent river systems
Synonyms: divide water_parting
Related terms: line continental_divide Great_Divide separate
2. [ noun ] an event marking a unique or important historical change of course or one on which important developments depend
Synonyms: turning_point landmark

"the agreement was a watershed in the history of both nations"

Related terms: juncture road_to_Damascus Fall_of_Man
Similar spelling:   Waters