Clear Title - Title Loan Terms and Definitions
If you purchased your vehicle for cash, then you have a clear title. If you purchased your vehicle and had a bank finance your loan, then you would be the registered owner but the bank would place a lien on the title until it is paid off as their security for you paying on the loan.
To have a clear title, you would have to have paid off the loan and have this bank removed from your title. If they still appear on the title but you have paid it off, you can get a release of the lien from the bank via a letter or they may sign on the title itself. This is considered a clear title.