From Wiktionary, the free dictionary
Borrowed from Slovene grča (“knot, gnarl”).
Kortschn
- (Carinthia) large blotch of eczema
- Heinz Dieter Pohl, Kleine Kärntner Mundartkunde (1989), pages 79 and 121, citing Villacher Bauernmundart, Herzmansky-Kulterer, 1969