Where does “wirt-” come from?
wirt- (Proto-Balto-Slavic) comes from Proto-Indo-European wr̥t-, from Proto-Indo-European wert-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.
wirt- (Proto-Balto-Slavic) comes from Proto-Indo-European wr̥t-, from Proto-Indo-European wert-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.