Submitted by György Chityil ... on Fri, 01/19/2018 - 20:39 Hierarchy: NounDescription: {{architecture}} A roof having a semicircular cross section; used to span large distances in railway stations etcNgram: barrel roofNgram Text: barrel roofSource: WiktionaryIssue: 0Wiktionary tag: architectureNgram Count: 2