Submitted by György Chityil ... on Fri, 01/19/2018 - 18:28 Hierarchy: NounDescription: {{context|medicine|virology}} Designating a calcivirus affecting humans, characterised by severe vomiting and diarrhoea.Ngram: NorwalkNgram Text: NorwalkSource: WiktionaryIssue: 0Wiktionary tag: virologyNgram Count: 1