Focus on the pronunciation of rack rent
English definition of “rack rent”
noun [C] PROPERTY
› a rent that is agreed between the owner of a property and the person renting it, rather than being fixed or controlled by law: The terms of the lease may prohibit letting except at a rack rent. It is important to ascertain if any rent free period is to include not only the rack rent but also service charges and/or insurance premiums.
› US an unfairly high level of rent