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Related to true bill: No bill
An indictment that has been approved by a grand jury as based on enough evidence against the accused to justify a prosecution, signified by the jurors by writing true bill on the indictment.
(Law) criminal law (formerly in Britain; now only US) the endorsement made on a bill of indictment by a grand jury certifying it to be supported by sufficient evidence to warrant committing the accused to trial
a bill of indictment in which a grand jury indicates that a hearing of the case is justified.