Caucasus

from WordNet (r) 3.0 (2006)

Caucasus
    n 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 [syn: {Caucasus}, {Caucasus
         Mountains}]
    2: a large region between the Black and Caspian seas that
       contains the Caucasus Mountains; oil is its major resource
       [syn: {Caucasia}, {Caucasus}]

from The Collaborative International Dictionary of English v.0.48

Caucasus \Caucasus\ n.
   1. (Geog.) a large region between the Black and Caspian seas.

   Syn: Caucasia.
        [WordNet 1.5]

   2. (Geog.) the mountain range located between the Black and
      Caspian seas.
      [PJC]