Noun: sinkhole 'singk,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 sinkhole suddenly appeared in the middle of the city street";
- sink, swallow hole, doline, dolina
Derived forms: sinkholes
Type of: depression, natural depression
Encyclopedia: Sinkhole