1) Adriatic sea 2) Arm of the mediterranean 3) Croatia is on it 4) Expanse west of Albania 5) Mediterranean sea arm 6) Sea between Italy and Albania 1) Sea 
• (a.) Of or pertaining to a sea so named, the northwestern part of which is known as the Gulf of Venice.
A`dri·at'ic adjective [ Latin Adriaticus , Hadriaticus , from Adria or Hadria , a town of the Veneti.] Of or pertaining to a sea so named, the northwestern part of which is known as the Gulf of Venice. 
[n] - an arm of the Mediterranean between Slovenia and Croatia and Montenegro and Albania on the east and Italy on the west
Adriatic Sea noun an arm of the Mediterranean between Slovenia and Croatia and Montenegro and Albania on the east and Italy on the west
of or pertaining to the Adriatic Sea.