Melbourne, 2nd Viscount Syllabification: (Mel·bourne, 2nd Viscount)Pronunciation: /ˈmelbərn/Definition of Melbourne, 2nd Viscount (1779–1848), British statesman; prime minister 1834 and 1835–41; born William Lamb. He became chief political adviser to Queen Victoria after her accession in 1837. Melbourne, 2nd Viscount in other Oxford dictionaries Definition of Melbourne, 2nd Viscount in the British & World English dictionary