English▸ noun [mass noun] Geology landscape underlain by limestone which has been eroded by dissolution, producing ridges, towers, fissures, sinkholes and other characteristic landforms:
[count noun] it was strange country, broken into hummocks and karsts and mesas
parts of the karst are barren and treeless
volcanic topography superficially resembling true karst.
– ORIGIN late 19th century: from German der Karst, the name of a limestone region in Slovenia.