Submitted by György Chityil ... on Fri, 01/19/2018 - 22:00 Hierarchy: NounDescription: {{Cockney rhyming slang}} bum (behind, bottom).Ngram: deaf and dumbNgram Text: deaf and dumbSource: WiktionaryIssue: 0Wiktionary tag: Cockney rhyming slangNgram Count: 3