West's Encyclopedia of American Law | Grand Jury

A panel of citizens that is convened by a court to decide whether it is appropriate for the government to indict (proceed with a prosecution against) someone suspected of a crime.

An American institution since the colonial days, the grand jury has long played an important role in CRIMINAL LAW. The FIFTH AMENDMENT to the U.S. Constitution says that a person suspected of a federal crime cannot be tried until a grand jury has determined that there is enough reason to charge the person. Review by a grand jury is meant to protect suspects from inappropriate prosecution by the government, since grand jurors are drawn from the general population. It has been criticized at times as failing to serve its purpose.

The grand jury system originated in twelfth-century England, when King