Submitted by György Chityil ... on Fri, 01/19/2018 - 16:36 Hierarchy: NounDescription: {{chiefly|British}} An underground railway.Ngram: undergroundNgram Text: undergroundSource: WiktionaryIssue: 0Wiktionary tag: chieflyNgram Count: 1Wikokit WikiText ID: 1368634
