Grand jury decision that not enough evidence exists to go to trail in a particular case; there was no probable cause to believe that a crime was committed and a specific person committed it.
This phrase, endorsed by a grand jury on the indictment, is equivalent to "not found" or "not a true bill." It means that, in the opinion of the jury, evidence was insufficient to warrant the return of a formal charge.
This phrase, endorsed by a grand jury on the written indictment submitted to it for its approval, means that the evidence was found insufficient to indict.