A legal action that ends all ownership rights in a home when the homebuyer fails to make the A loan using your home as collateral. In some states, the term mortgage is also used to describe the document you sign (to grant the lender a lien on your home). It also may be used to indicate the amount of money you borrow, with interest, to purchase your house. The amount of your mortgage often is the purchase price... payments or is otherwise in Failure to fulfill a legal obligation. A default includes failure to pay on a financial obligation, but also may be a failure to perform some action or service that is non-monetary. For example, when leasing a car, the lessee is usually required to properly maintain the car. under the terms of the mortgage.