swallow hole

/ˌswɑloʊ hoʊl/
IPA guide

Other forms: swallow holes

Definitions of swallow hole
  1. noun
    a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
    synonyms: sink, sinkhole
    see moresee less
    type of:
    depression, natural depression
    a sunken or depressed geological formation
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