Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: NounDescription: {{context|geology}} A depression in the land formed from the collapse or erosion of the underlying rock or soil.Ngram: sink holeNgram Text: sink holeSource: WiktionaryIssue: 0Wiktionary tag: geologyNgram Count: 2
