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watercourse

/ˈwɔːtə(ɹ)ˌkɔː(ɹ)s/ noun

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about watercourse at Wordnik → Where our words come from →

  1. Natural or artificial channel through which water flows.
  2. A natural body of running water flowing on or under the earth.
  3. A conduit through which water flows.

Origin

From Middle English water course; equivalent to water + course.

From Wiktionary, via Kaikki.org (CC BY-SA)