Bosporus

n.

1.

A strait or narrow sea between two seas, or a lake and a seas; as, the Bosporus (formerly the Thracian Bosporus) or Strait of Constantinople, between the Black Sea and Sea of Marmora; the Cimmerian Bosporus, between the Black Sea and Sea of Azof.

Noun

1.

Bosporus - a strait connecting the Mediterranean and the Black Sea; separates the European and Asian parts of Turkey; an important shipping route

Republic of Turkey, sound, strait, Turkey