Webster's Revised Unabridged Dictionary · 1913

Nabob

Nabob (nā"bob) , noun

[Hind. nawāb, from Arabic nawāb, plural of nāib 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