Submitted by György Chityil ... on Fri, 01/19/2018 - 20:48 Hierarchy: AdjectiveDescription: {{form of|Attributive form|black hole|nodot=1}}, ''noun''.Ngram: black-holeNgram Text: black-holeSource: WiktionaryIssue: 0Wiktionary tag: form ofAttributive formblack holenodot=1Ngram Count: 1