There are multiple definitions - click on the translation that matches your context.

Briefgrundschuld

Substantiv

partial

mortgage

noun

Definitions of mortgage

an agreement that allows someone to borrow money from a bank or similar organization, most commonly in order to buy a house or other piece of real property

I've been unable to keep up with my monthly mortgage payments

security interest in real property or shares as security for money borrowed; the transfer of legal title of a property, often land, to another as security for payment of a debt

The bank took a mortgage over the borrower's home.

the amount of money loaned under such an agreement

We took out a mortgage for €465 000.