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1. The mountain range in Caucasia between the Black Sea and the Caspian Sea that forms part of the traditional border between Europe and Asia
   - Caucasus Mountains
    
2. A large region between the Black and Caspian seas that contains the Caucasus Mountains; oil is its major resource
   - Caucasia

Sounds like: caucuses

Type of: chain, chain of mountains, geographic area, geographic region, geographical area, geographical region, mountain chain, mountain range, range, range of mountains

Encyclopedia: Caucasus Caucasus, Northern Caucasus, Northern, Russia