Noun: swallow hole swó-low hówl
- A depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
"A massive swallow hole suddenly appeared in the middle of the city street";
- sinkhole, sink, doline, dolina
Derived forms: swallow holes
Type of: depression, natural depression
Encyclopedia: Swallow hole