watershed

1. n. The whole region or extent of country which contributes to the supply of a river or lake. Source: opted

2. n. The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin. Source: opted

3. n. a ridge of land that separates two adjacent river systems Source: wordnet

4. n. the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet Source: wordnet

5. n. an event marking a unique or important historical change of course or one on which important developments depend Source: wordnet

6. 1. The whole region or extent of country which contributes to the supply of a river or lake. 2. The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin. Source: webster

7. n:100 n. a ridge of land that separates two adjacent river systems Source: ecdict

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