Na"bob (?), n. [Hind. nawab, from Ar. nawab, pl. of naib a vicegerent, governor. Cf Nawab.]
A deputy or viceroy in India; a governor of a province of the ancient Mogul empire.
One who returns to Europe from the East with immense riches: hence, any man of great wealth.
"A bilious old nabob."
© Webster 1913.