From Proto-Turkic *yadag (“on foot”). Cognate to Kyrgyz жөө (jöö), etc.
јойу • (ǰoyu)
N. A. Baskakov, Toščakova N.A, editor (1947), “јойу”, in Ojrotsko-Russkij Slovarʹ [Oyrot-Russian Dictionary], Moscow: M.: OGIZ, →ISBN
