bond with unquestioned right to repayment of principal at a specified future date, unquestioned right to fixed interest payments on stated dates, and no right to any additional interest, principal, or, straight bonds - bonds having no right or option of conversion into any other form of shares, stock or bonds, debenture - an acknowledgment of indebtedness, usually given by an incorporated company often under seal, and frequently including a charge on the assets of the company.