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sinkhole

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noun sink·hole \ˈsiŋk-ˌhōl\

Simple Definition of sinkhole

  • : a low area or hole in the ground that is formed especially when soil and rocks are removed by flowing water

Source: Merriam-Webster's Learner's Dictionary

Full Definition of sinkhole

  1. 1 :  a hollow place or depression in which drainage collects

  2. 2 :  a hollow in a limestone region that communicates with a cavern or passage

  3. 3 :  sink 2

  4. 4 :  something (as an unprofitable investment) that steadily drains money or resources <a financial sinkhole>


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