sinkhole

noun

sink·​hole ˈsiŋk-ˌhōl How to pronounce sinkhole (audio)
Synonyms of sinkholenext
1
: a hollow place or depression in which drainage collects
2
: a hollow in a limestone region that communicates with a cavern or passage
3
4
: something (such as an unprofitable investment) that steadily drains money or resources
a financial sinkhole

Examples of sinkhole in a Sentence

Recent Examples on the Web
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The resolution also draws attention to potential geological and environmental concerns, citing its underground porous limestone that creates risks for sinkholes and water movement, in addition to the city’s history of major flooding. ABC News, 4 Mar. 2026 From giant craters in Newton, to sinkhole size tire busters in Brighton, potholes are popping up in cities and towns across Massachusetts. Paul Burton, CBS News, 3 Mar. 2026 University of Nebraska-Omaha Public Safety security cameras show the moment two vehicles fell into a sinkhole on Tuesday — and how the drivers were able to get out. Ira Gorawara, New York Times, 28 Feb. 2026 Motorists in Omaha, Nebraska, were left in the lurch after a sinkhole opened up, trapping them in an open cavity made in a roadway on Tuesday, Feb. 24. Amaris Encinas, USA Today, 25 Feb. 2026 See All Example Sentences for sinkhole

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of sinkhole was in the 15th century

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Cite this Entry

“Sinkhole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sinkhole. Accessed 10 Mar. 2026.

Kids Definition

sinkhole

noun
sink·​hole ˈsiŋk-ˌhōl How to pronounce sinkhole (audio)
: a hollow place in which drainage collects

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