From Proto-Turkic *boguday (“wheat”).
Cognate with Bashkir бойҙай (boyźay), Kazakh бидай (bidai), Kyrgyz буудай (buuday), Southern Altai буудай (buuday), Azerbaijani buğda, Turkish buğday, Turkmen bugdaý, Uzbek bug'doy.
богъдай (boğday)