graymailglossary / GRAYMAIL graymail. A criminal defendant’s threat to reveal classified information during the trial in the hope of forcing the government to drop the criminal charge. Cf. BLACKMAIL(1); GREENMAIL(1), (2); FEEMAIL. 词条贡献者 译员Clara,毕业于国内知名法学院,擅长翻译有关建筑领域的法律文件。