an autonomous region of NW Italy: under many different rulers until passing to the house of Savoy in the 11th century; established as an autonomous region in 1944. Capital: Aosta. Pop: 120 909 (2003 est). Area: 3263 sq km (1260 sq miles)
Valle d'Aosta in American English
(ˈvɑleɪ dɑ ˈɔstɑ)
region of NW Italy: 1,260 sq mi (3,263 sq km); pop. 116,000