wrzos m inan
From Proto-Slavic *vȇrsъ, from Proto-Balto-Slavic *werˀź-, *wirˀź- (whence Lithuanian vìržis (“heather”), Latvian vir̂zis (“heather”)), from an unknown non-Indo-European source. Cognates include Irish fraoch and Ancient Greek ἐρείκη (ereíkē, “heather”).