Grand jury Meaning, Definition & Usage

  1. noun a jury to inquire into accusations of crime and to evaluate the grounds for indictments

WordNet

Definitions
  1. (Law), a jury of not less than twelve men, and not more than twenty-three, whose duty it is, in private session, to examine into accusations against persons charged with crime, and if they see just cause, then to find bills of indictment against them, to be presented to the court; called also grand inquest.

Webster 1913