Added 10 October 2026
sinkhole
/ˈsɪŋkˌhoʊl/ noun
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about sinkhole at Wordnik → Where our words come from →
- A depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof.
Origin
From Middle English sinkehole, sinkeholl, equivalent to sink + hole.
From Wiktionary, via Kaikki.org (CC BY-SA)