1. watershed - noun
· a ridge of land that separates two adjacent river systems
Synonym(s): water_parting, divide
Hypernym(s): line
2. watershed - noun
· 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"
Synonym(s): river_basin, basin, drainage_basin, catchment_area, catchment_basin, drainage_area
Hypernym(s): geographical_area, geographic_area, geographical_region, geographic_region
3. watershed - noun
· 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"
Synonym(s): landmark, turning_point
Hypernym(s): juncture, occasion
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