Submitted by György Chityil ... on Fri, 01/19/2018 - 22:28 Hierarchy: NounDescription: {{idiomatic|by extension}} A situation, person, group, etc. which is difficult to overcome or deal with.Ngram: hard nut to crackNgram Text: hard nut to crackSource: WiktionaryIssue: 0Wiktionary tag: by extensionNgram Count: 4
