debt

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Something owed, such as money, goods, or services.
2. n. An obligation or liability to pay or render something to someone else.
3. n. The condition of owing: a young family always in debt.
4. n. An offense requiring forgiveness or reparation; a trespass.

Century Dictionary and Cyclopedia

1. n. That which is due from one person to another, whether money, goods, or services, and whether payable at present or at a future time; that which one person is bound to pay to or perform for another; what one is obliged to do or to suffer; a due; a duty; an obligation.
2. n. The state of being under obligation to make payment, as of money or services, to another; figuratively, the state of being under obligation in general.
3. n. An offense requiring reparation or expiation; default of duty: a trespass; a sin.

Wiktionary

1. n. An action, state of mind, or object one has an obligation to perform for another, adopt toward another, or give to another.
2. n. The state or condition of owing something to another.
3. n. Money that one person or entity owes or is required to pay to another, generally as a result of a loan or other financial transaction.

GNU Webster's 1913

1. n. That which is due from one person to another, whether money, goods, or services; that which one person is bound to pay to another, or to perform for his benefit; thing owed; obligation; liability.
2. n. A duty neglected or violated; a fault; a sin; a trespass.
3. n. (Law) An action at law to recover a certain specified sum of money alleged to be due.

WordNet 3.0

1. n. the state of owing something (especially money)
2. n. an obligation to pay or do something
3. n. money or goods or services owed by one person to another