deposit money
noun [ U ]
ukus COMMERCE, PROPERTY
part of the cost of something such as a product or property that is paid to the seller, so it will not be sold to anyone else:
Apart from lending deposit money, parents can also act as mortgage guarantors.
PROPERTY
money that someone renting a property pays to the owner of the property, which they get back when they leave if they have not caused any damage:
The landlord only gave us half of our deposit money back.