Caucasus

geographical name

Cau·​ca·​sus ˈkȯ-kə-səs 

variants or Caucasia

kȯ-ˈkā-zhə 

-shə

region of southeastern Europe (Georgia, Azerbaijan, Armenia, and part of southern Russia in Europe) between the Black and Caspian seas, divided by the Caucasus Mountains into Cis*cau*ca*sia \ ˌsis-​kȯ-​ˈkā-​zhə , -​shə \ to the north and Trans*cau*ca*sia \ ˌtran(t)s-​kȯ-​ˈkā-​zhə , -​shə \ to the south