Where does “ruo” come from?
ruo (Middle High German) comes from Old High German ruowa, from Proto-West Germanic rōu, from Proto-Germanic *rōō, from Proto-Indo-European h₁reh₁- — to row; to separate; loose, sparse, rare.
ruo (Middle High German) comes from Old High German ruowa, from Proto-West Germanic rōu, from Proto-Germanic *rōō, from Proto-Indo-European h₁reh₁- — to row; to separate; loose, sparse, rare.