Triglav Syllabification: (Tri·glav)Pronunciation: /ˈtrēˌgläf, -ˌgläv/Definition of Triglav a mountain in the Julian Alps, in northwestern Slovenia, near the Italian border. Rising to 9,392 feet (2,863 m), it is the highest peak in the mountains east of the Adriatic Sea. Triglav in other Oxford dictionaries Definition of Triglav in the British & World English dictionary