Greater Caucasus UK /ˈɡɹeɪtə(ɹ)ˈkɔːkəsəs/US [ˈɡɹ̠ʷeɪ̯ɾɚ ˈkʰɔkəsəs] noun1 •the major mountain range of the Caucasus Mountains, which stretches for about 1,200 kilometres from west-northwest to east-southeast, between the Taman Peninsula of the Black Sea to the Absheron Peninsula of the Caspian Sea.