first mortgageglossary / first mortgage A mortgage that is senior to all other mortgages on the same property. [Cases: Mortgages 151. C.J.S. Mortgages §§ 210–212, 226.] 词条贡献者 译者李科,毕业于世界顶级翻译学院,擅长翻译各种与国家安全审查相关的法律文件。