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。