blackletter lawglossary / BLACKLETTER LAW blackletter law. One or more legal principles that are old, fundamental, and well settled. • The term refers to the law printed in books set in Gothic type, which is very bold and black. — Also termed hornbook law. 词条贡献者 法律翻译亚明,毕业于欧洲顶尖的高级翻译学院,专注翻译各类与汽车与运输有关的法律文件。