from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A topographic region in which all water drains to a common outlet; a watershed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
Sorry, no etymologies found.