Credit Insurance is an insurance policy associated with a specific loan or line of credit which pays back some or all of any monies owed should certain things happen to the borrower, such as death, disability, or unemployment.
The costs (called a "premium") for this are usually charged monthly, depending on the balance owed, and depending on the usage of the loan or line, could almost double the cost of it (on the opposite end of the spectrum, clever usage could avoid having to pay almost any premium at all).