sink·hole (s ngk h l )n. A natural depression in a land surface communicating with a subterranean passage, generally occurring in limestone regions and formed by solution or by collapse of a cavern roof. |
| sinkhole (sngkhl) A natural depression in a land surface formed by the dissolution and collapse of a cavern roof. Sinkholes are roughly funnel-shaped and on the order of tens of meters in size. They generally occur in limestone regions and are connected to subteranean passages. Also called sink. See more at karst topography. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  sinkhole - a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roofnatural depression, depression - a sunken or depressed geological formation |
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