Lat. A bill; an original hill. Billa excambii. A bill of exchange. Billa exonerationis. A bill of lading. Billa vera. (A true bill) In old practice. The indorsement anciently made on a bill of indictment by a grand jury, when they found it sufficiently sustained by evidence. 4 Bl. Comm. 306.
BILLA
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.