Ignoramus
Defined in 3 dictionaries — Ballentine's (1916), Black's (1910), Black's (1891)
Ballentine's Law Dictionary
James A. Ballentine · 1916
We do not know, the indorsement of a grand jury upon an indictment not found; the opposite of “a true bill.”
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat. "We are ignorant;" "We ignore it." Formerly the grand jury used to write this word on bills of indictment when, after having heard the evidence, they thought the accusation against the prisoner was groundless, intimating that, though the facts might possibly be true, the truth did not appear to them; but now they usually write in English the words "Not a true bill," or "Not found," if that is their verdict; but they are still said to ignore the bill. Brown.
A Dictionary of Law
Henry Campbell Black · 1891
Lat. “Weare ignorant;” “We ignore it.” Formerly the grand jury used to write this word on bills of indictment when, after having heard the evidence, they thought the accusation against the prisoner was groundless, intimating that, though the facts might possibly be true, the truth did not appear to them; but now they usually write in English the words “ Not a true bill,” or “Not found,” if that is their verdict; but they are still said toignore thebill. Brown.