Definitions For Watershed

noun

• An event marking a unique or important historical change of course or one on which important developments depend
• The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
• A ridge of land that separates two adjacent river systems
• A time when an important change happens
• A line of hills or mountains from which rivers drain : a ridge between two rivers
• The area of land that includes a particular river or lake and all the rivers, streams, etc., that flow into it