From Wiktionary, the free dictionary
From dative of уьст (üst).
уьстюне • (üstüne)
- on, over, on top (directional)
- to
- in addition to
- Бамматов Б.Г., editor (2013), “уьстюне”, in Кумыкско-русский словарь [Kumyk–Russian dictionary], Makhachkala: ИЯЛИ ДНЦ РАН