n. A viceroy or governor of a province in India under the Mogul empire: as, the nabob of Oudh; the nabob of Surat. The nabob was, properly speaking, a subordinate provincial governor, who acted under a soubah or viceroy.n. An honorary title occasionally conferred upon Mohammedans of distinction.n. An Anglo-Indian who has acquired great wealth and lives in Eastern luxury; hence, any very rich and luxurious man.