Where does “rille” come from?
rille (Middle Low German) comes from Proto-Germanic rīþaz, from Proto-Indo-European h₁rey- — to arise, arise; to rise, arise; to rise; arise.
rille (Middle Low German) comes from Proto-Germanic rīþaz, from Proto-Indo-European h₁rey- — to arise, arise; to rise, arise; to rise; arise.