Tarnavut was a summer pasture located in the territory of the Zangazur uezd of the former Yelizavetpol (Ganja) governorate, later in the former Mehri (Meghri) district, and present-day Syunik province. It is located near the village of Nuvedi (Nrnadzor).

The toponym was coined by adding the suffix “-vut”, which is a dialect variant of the plural suffix “-ghut” , “-ut” in Old Turkic to the ethnonym “Tarna” (Terne ) of the Khazar tribes.