Where does “krai̯ina” come from?
krai̯ina (Slovincian) comes from Proto-Slavic krajina, from Proto-Slavic krajь, from Proto-Slavic krojiti, from Proto-Balto-Slavic krájīˀtei, from Proto-Indo-European kroyh₁-eye-ti, from Proto-Indo-European kroyh₁-, from Proto-Indo-European kroh₁y-, from Proto-Indo-European kreh₁y- — to sift, to separate.
krai̯ina (Slovincian): area, region
Ancestry of “krai̯ina”, step by step