Definition of Rome penny in English:

Rome penny

Pronunciation /ˈrəʊm ˌpɛni/

noun

historical
  • An annual tax formerly paid in England, principally before the Reformation, to the papal see at Rome; = Peter's penny .

    "†to reckon up a person's Rome-pennies": to tell all his or her faults (obsolete).

Origin

Old English; earliest use found in Laws: Norðhymbra Preosta Lagu. From Rome + penny.