Definition of Caucasus in English:
Caucasus
(also Caucasia)
proper nounˈkɔːkəsəsˈkɔkəsəs
A mountainous region of south-eastern Europe and south-western Asia, lying between the Black Sea and the Caspian Sea, in Georgia, Armenia, Azerbaijan, and south-eastern Russia.
高加索（欧洲东南与亚洲西南山区，位于黑海和里海之间，在格鲁吉亚、亚美尼亚、阿塞拜疆和俄罗斯东南境内）
Definition of Caucasus in US English:
Caucasus
(also Caucasia)
proper nounˈkôkəsəsˈkɔkəsəs
A mountainous region of southeastern Europe and southwestern Asia, lying between the Black Sea and the Caspian Sea, in Georgia, Armenia, Azerbaijan, and southeastern Russia.
高加索（欧洲东南与亚洲西南山区，位于黑海和里海之间，在格鲁吉亚、亚美尼亚、阿塞拜疆和俄罗斯东南境内）