An″nu‐al, n. 1. A thing happening or returning yearly; esp. a literary work published once a year.
2. Anything, especially a plant, that lasts but one year or season; an annual plant.
Oaths... in some sense almost annuals;... and I myself can remember about forty different sets.
Swift.
3. (R. C. Ch.) A Mass for a deceased person or for some special object, said daily for a year or on the anniversary day.