Nabob \Na"bob\ (n[=a]"b[o^]b), n. [Hind. naw[=a]b, from Ar. naw[=a]b, pl. of n[=a]["i]b a vicegerent, governor. Cf Nawab.]

1. A deputy or viceroy in India; a governor of a province of the ancient Mogul empire.

2. One who returns to Europe from the East with immense riches: hence, any man of great wealth. `` A bilious old nabob.'' --Macaulay.

Source: Webster's Revised Unabridged Dictionary (1913)