WordNet: sink, sinkhole, swallow hole
a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
- hypernym depression, natural depression
sink
- (suomi) karstipainauma (synonyymi)
sinkhole
- (suomi) karstivajoama (synonyymi)
swallow hole
- (suomi) vajoama (synonyymi)