Denariis petrii
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Commonly called "Peter's Pence." An annual payment on St. Peter's feast of a penny from every family to the pope, during the time that the Roman Catholic religion was established in England.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Peter’s pence, an annual general contribution to the pope.