private signatureglossary / private signature Civil law. A signature made on a document (such as a will) that has not been witnessed or notarized. [Cases: Wills 149. C.J.S. Wills § 338.] 词条贡献者 译员Terence,毕业于国内顶尖法学院,擅长翻译有关能源和自然资源领域的法律文件。