What is Annates?

Legal Definition
Annates (Latin: annatae, from annus, "year") were a payment from the recipient of an ecclesiastical benefice to the ordaining authorities. Eventually, they consisted of half or the whole of the first year's profits of a benefice; after the appropriation of right of consecration by the Vatican, they were paid to the papal treasury, ostensibly as a proffered contribution to the church. They were also known as the "First Fruits"' (primitiae), a concept which dates back to earlier Greek, Roman, and Hebrew religions.
-- Wikipedia
Legal Definition
Ecc. law. First fruits paid out of spiritual benefices to the pope, being, the value of one year's profit.
-- Bouviers Law Dictionary
Legal Definition
In ecclesiastical law. First-fruits paid out of spiritual benefices to the pope, so called because the value of one year's profit was taken as their rate.
-- Black's Law Dictionary
Legal Definition
The first year’s profits paid to the pope by the holder of a benefice.
-- Ballentine's Law Dictionary