[syn: Caucasia, Caucasus]
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]
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]