proper noun

• 1

  (also Balkan Mountains)

  A range of mountains stretching eastwards across Bulgaria from the Serbian frontier to the Black Sea. The highest peak is Botev Peak (2,375 m; 7,793 ft).

• 2The countries occupying the part of south-eastern Europe lying south of the Danube and Sava Rivers, forming a peninsula bounded by the Adriatic and Ionian Seas in the west, the Aegean and Black Seas in the east, and the Mediterranean in the south.