n. At common law (and according to the present rule in some of the United States, and in form in nearly all, if not all, the States), a conveyance of real estate or some interest therein, defeasible upon the payment of money or the performance of some other condition.n. By the law of most of the United States, a lien or charge upon specific property, real or personal, created by what purports to be an express transfer of title, with or without possession, but accompanied by a condition that the transfer shall be void if in due time the money be paid or the thing done to secure which the transfer is given.n. A state or condition resembling that of mortgaged property.To grant (land, houses, or other immovable property) as security for money lent or contracted to be paid, or other obligation, on condition that if the obligation shall be discharged according to the contract the grant shall be void, otherwise it shall remain in full force. See mortgage, n., 1.To pledge; make liable; put to pledge; make liable for the payment of any debt or expenditure; put in a position similar to that of being pledged.