Where does “grådu” come from?

grådu (Westrobothnian) comes from Old Norse gráðugr, from Proto-Germanic grēdagaz, from Proto-Germanic grēdaz, from Proto-Indo-European ǵʰer- — to yearn for; to enclose; bowels, intestines.

grådu (Westrobothnian): who is starved and therefore eats much and to...