Where does “пшённый” come from?
пшённый (Russian) comes from Russian пшено́, from Old East Slavic пьшено, from Proto-Slavic pьšeno, from Proto-Balto-Slavic pišena, from Proto-Indo-European pis-en-om, from Proto-Indo-European peys- — to grind, to crush.
пшённый (Russian): millet
Ancestry of “пшённый”, step by step