Submitted by György Chityil ... on Fri, 01/19/2018 - 20:39 Hierarchy: NounDescription: {{context|geography}} A topographic region in which all water drains to a common outlet; a watershed.Ngram: drainage basinNgram Text: drainage basinSource: WiktionaryIssue: 0Wiktionary tag: geographyNgram Count: 2
