sinkhole

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sink·hole

 (sĭngk′hōl′)
n.
A natural depression formed by the undermining or sudden collapse of the land surface, often as a result of groundwater enlarging cavities in underlying limestone or other easily soluble bedrock.

sinkhole

(ˈsɪŋkˌhəʊl)
n
1. (Physical Geography) Also called (esp Brit): swallow hole a depression in the ground surface, esp in limestone, where a surface stream disappears underground
2. a place into which foul matter runs

sink•hole

(ˈsɪŋkˌhoʊl)

n.
1. a hole formed in soluble rock by the action of water, serving to conduct surface water underground.
2. a depressed area in which waste or drainage collects.
[1425–75]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sinkhole - a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roofsinkhole - a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
natural depression, depression - a sunken or depressed geological formation

sinkhole

noun
An area sunk below its surroundings:
Translations
References in periodicals archive ?
With the weather being kind, this was not as much of a problem as it could have been, although Bingley did their best by locating some of the checkpoints in shakeholes and gullies to catch out the unwary