Pliny the Elder's Natural History (77–79 AD) derives the name of the Caucasus from Scythian kroy-khasis ("ice-shining, white with snow"). German linguist Paul Kretschmer notes that the Latvian word Kruvesis also means "ice".
In the Tale of Past Years (1113 AD), it is stated that Old East Slavic Кавкасийскыѣ горы (Kavkasijskyě gory) came from Ancient Greek Καύκασος (Kaukasos; later Greek pronunciation Kafkasos)), which, according to M. A. Yuyukin, is a compound word that can be interpreted as the "Seagull's Mountain" (καύ-: καύαξ, καύηξ, ηκος ο, κήξ, κηϋξ "a kind of seagull" + the reconstructed *κάσος η "mountain" or "rock" richly attested both in place and personal names.)
According to German philologists Otto Schrader and Alfons A. Nehring, the Ancient Greek word Καύκασος (Kaukasos) is connected to Gothic Hauhs ("high") as well as Lithuanian Kaũkas ("hillock") and Kaukarà ("hill, top"). British linguist Adrian Room points out that Kau- also means "mountain" in Pelasgian.
The Transcaucasus region and Dagestan were the furthest points of Parthian and later Sasanian expansions, with areas to the north of the Greater Caucasus range practically impregnable. The mythological Mount Qaf, the world's highest mountain that ancient Iranian lore shrouded in mystery, was said to be situated in this region. In Middle Persian sources of the Sasanian era, the Caucasus range was referred to as Kaf Kof. The term resurfaced in Iranian tradition later on in a variant form when Ferdowsi, in his Shahnameh, referred to the Caucasus mountains as Kōh-i Kāf. "Most of the modern names of the Caucasus originate from the Greek Kaukasos (Lat., Caucasus) and the Middle Persian Kaf Kof".
"The earliest etymon" of the name Caucasus comes from Kaz-kaz, the Hittite designation of the "inhabitants of the southern coast of the Black Sea".
It was also noted that in Nakh Ков гас (Kov gas) means "gateway to steppe"
Endonyms and exonyms
The modern name for the region is usually similar in the many languages, and is generally between Kavkaz and Kawkaz.