1. a tactic in which a defendant threatens to disclose classified government information during trial unless charges are dropped or reduced
Usage: legal term; also spelled 'grey mail'

Examples

• The defendant's graymail strategy forced prosecutors to reconsider the case.
• Congress passed legislation to address graymail and protect classified information in court proceedings.
• The attorney warned that graymail could result in severe legal consequences.
• Graymail has become a significant challenge in national security cases.
• The judge ruled that graymail would not be tolerated in her courtroom.