A sum of money that is owed or due to be paid because of an express agreement; a specified sum of money that one person is obligated to pay and that another has the legal right to collect or receive.
A fixed and certain obligation to pay money or some other valuable thing or things, either in the present or in the future. In a still more general sense, that which is due from one person to another, whether money, goods, or services. In a broad sense, any duty to respond to another in money, labor, or service; it may even mean a moral or honorary obligation, unenforceable by legal action. Also, sometimes an aggregate of separate debts, or the total sum of the existing claims against a person or company. Thus we speak of the "national debt," the "bonded debt" of a corporation, and so on.