(n.) A banker; a money changer or broker; one who deals in bills of exchange, or who is skilled in the science of exchange.

Shylock bank clerk bank manager bank officer bank president banking executive baron big boss big businessman bill broker business leader businessman cambist captain of industry cashier director discounter enterpriser entrepreneur financier industrialist investment banker king lender little businessman loan officer loan shark loaner magnate man of commerce manager money broker money changer money dealer moneylender moneymonger mortgage holder mortgagee note broker pawnbroker teller top executive trust officer tycoon usurer