sinkhole

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Definitions from WordNet

Noun sinkhole has 1 sense

sinkhole, sink, swallow hole - a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
--₁ is a kind of natural depression, depression

Definitions from the Web

Sinkhole

Description:

A sinkhole is a natural depression or hole that forms on the Earth's surface due to the collapse of underground caves or the dissolution of rocks such as limestone. Sinkholes can range in size from small pits to massive craters, and they often occur without warning.

Parts of Speech:

Noun: sinkhole

Senses:

A natural depression or hole resulting from the collapse of underground cavities.
An unexpected setback or problem.

Usages:

Sense 1:

When exploring caves, it is important to be cautious of potential sinkholes that may be hiding underground.

Sample Sentence: The massive sinkhole in the middle of the field swallowed up several trees.

Sense 2:

The company faced a financial sinkhole after a series of poor investments.

Sample Sentence: The team's playoff hopes fell into a sinkhole after their star player got injured.

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