Debt

noun

1. An action, state of mind, or object one has an obligation to perform for another, adopt toward another, or give to another.
2. The state or condition of owing something to another.

   "I am in your debt."

3. 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.
4. An action at law to recover a certain specified sum of money alleged to be due.