noun
plural -gages
[count] :a legal agreement in which a person borrows money to buy property (such as a house) and pays back the money over a period of years
verb
-gages; -gaged; -gaging
[+ obj] :to give someone a legal claim on (property that you own) in exchange for money that you will pay back over a period of years
mortgage the/your future
chiefly US disapproving :to borrow a large amount of money that will have to be paid back in the future or to do something that may cause problems for you in the future