Elbrus Syllabification: (El·brus)Pronunciation: /elˈbro͞os, ˈelˌbro͞os/Definition of Elbrus a peak in the Caucasus Mountains, on the border between Russia and Georgia. Rising to 18,481 feet (5,642 m), it is the highest mountain in Europe. Elbrus in other Oxford dictionaries Definition of Elbrus in the British & World English dictionary