Where does “آیاق اوستی” come from?

آیاق اوستی (Ottoman Turkish) comes from Ottoman Turkish آیاق, from Old Anatolian Turkish ایاق, from Proto-Turkic adak — foot; end.

Ancestry of “آیاق اوستی”, step by step

آیاق اوستی traces back through two separate lines of ancestry.

via Ottoman Turkish آیاق

StepLanguageWordMeaning
1Ottoman Turkishآیاقfoot; leg
2Old Anatolian Turkishایاق
3Proto-Turkicadakfoot; end

via Ottoman Turkish اوست

StepLanguageWordMeaning
1Ottoman Turkishاوستtop, the upper surface of anything
2Proto-Turkicüŕ-ton top, high above
3Proto-Turkicǖŕfat; on top, high above
Every word from Proto-Turkic adak
آیاق اوستی — Etymology, Origin & Word History | Etymology Explorer