grandfatherglossary / GRANDFATHER grandfather, vb. To cover (a person) with the benefits of a grandfather clause (the statute sets the drinking age at 21 but grandfathers those who are 18 or older on the statute’s effective date). 词条贡献者 资深译员玉晶,毕业于国内顶尖的高级翻译学院,擅长翻译各类与环境、安全与健康相关的法律文件。