Pondus
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
Poundage, which see.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In old English law. Poundage; i. e., a duty paid to the crown according to the weight of merchandise.
— Pondus regis. The king's weight; the standard weight appointed by the king. Cowell.