Submitted by György Chityil ... on Fri, 01/19/2018 - 22:23 Hierarchy: NounDescription: {{baseball|softball}} One of the two lines on the edge of a field marking the area inside which a fair ball may be hit.Ngram: foul lineNgram Text: foul lineSource: WiktionaryIssue: 0Wiktionary tag: softballNgram Count: 2