watercourse
wa·ter·course
noun
1.
natural or artificial channel through which water flows
Origin
From Middle English water course; equivalent to water + course.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.