letters of horningglossary / LETTERS OF HORNING letters of horning. Hist. Scots law. An execution process in which the creditor holding a decree obtained royal letters commanding the debtor to either perform or be outlawed. See HORNING. 词条贡献者 资深译员Walker,毕业于亚洲一流的高级翻译学院,擅长翻译各类与尽职调查相关的法律文件。