grand jury

American  

noun

1. a jury, at common law, of 12 to 23 persons, designated to inquire into alleged violations of the law in order to ascertain whether the evidence is sufficient to warrant trial.

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grand jury British  

noun

1. law (esp in the US and, now rarely, in Canada) a jury of between 12 and 23 persons summoned to inquire into accusations of crime and ascertain whether the evidence is adequate to found an indictment. Abolished in Britain in 1948 Compare petit jury

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grand jury Cultural  

1. A jury that decides whether the evidence warrants bringing an accused person to trial. Once indicted (see indictment) by a grand jury, a person must stand trial.

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Etymology

Origin of grand jury

First recorded in 1490–1500, grand jury is from Anglo-French graund juree

Example Sentences

The indictments — along with a civil lawsuit and grand jury testimony referenced in motions to dismiss the charges — portray Brooks and Smyles as the main drivers of the fights.

From Los Angeles Times • Apr. 7, 2026

The grand jury, in fact, had declined to indict Perkins.

From Slate • Apr. 6, 2026

The homicide investigation by Horry County police is now under scrutiny by a special prosecutor, and a state grand jury is reviewing evidence of alleged police misconduct.

From The Wall Street Journal • Apr. 5, 2026

Prosecutors said that testimony may have contained discrepancies, opened a grand jury investigation in late 2025, and sent subpoenas in January.

From Barron's • Mar. 18, 2026

Storrs ordered her to be held by the marshal until the grand jury met in January.

From "Votes for Women!" by Winifred Conkling