Where does “rumen” come from?
rumen (Middle Dutch) comes from Old Dutch rūmen, from Proto-Germanic rūmijaną, from Proto-Germanic rūmaz, from Proto-Indo-European rewh₁- — free space.
rumen (Middle Dutch) comes from Old Dutch rūmen, from Proto-Germanic rūmijaną, from Proto-Germanic rūmaz, from Proto-Indo-European rewh₁- — free space.