1. The extension or renewal of a short-term loan; the refinancing of a maturing loan or note.
2. The transfer of funds (such as IRA funds) to a new investment of the same type, esp. so as to defer payment of taxes. [Cases: Internal Revenue 3587, 3594. C.J.S. Internal Revenue §§ 206–208, 313, 319–326.] — roll over, vb.