no bill

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
NO BILL. These words are frequently used by grand juries. They are endorsed 
on a bill of indictment when the grand jury have not sufficient cause for 
finding a true bill. They are equivalent to Not found, (q.v.) or Ignoramus. 
(q.v.) 2 Nott & McC. 558. 
    

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