nabob Syllabification: (na·bob)Pronunciation: /ˈnābäb/Definition of nabob noun historical a Muslim official or governor under the Mogul empire. a person of conspicuous wealth or high status. chiefly historical a person who returned from India to Europe with a fortune. Origin:from Portuguese nababo or Spanish nabab, from Urdu; see also nawabnabob in other Oxford dictionaries Definition of nabob in the British & World English dictionary