Is “Karst” a Scrabble word?
Yes
KARST
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Karst
noun
1.A type of land formation, usually with many caves formed through the dissolving of limestone by underground drainage.