debt instrumentglossary / DEBT INSTRUMENT debt instrument. A written promise to repay a debt, such as a promissory note, bill, bond, or commercial paper. [Cases: Bills and Notes 28. C.J.S. Bills and Notes; Letters of Credit§§ 2–3, 7–9, 12, 22, 75.] 词条贡献者 资深译员Gary,毕业于一所培养高级翻译以及跨文化事务专家的精英大学,专注翻译各种与公共政策与战略有关的法律文件。