Noah Webster's New International Dictionary of the English Language

1. (a.) Occurring yearly; pertaining to a year; as an annual reunion; returning every year; coming or happening once in the year; yearly.

2. (a.) Performed or accomplished in a year; reckoned by the year; as, the annual motion of the earth.

3. (a.) Lasting or continuing only one year or one growing season; requiring to be renewed every year; as, an annual plant; annual tickets.

4. (n.) A thing happening or returning yearly; esp. a literary work published once a year.

5. (n.) Anything, especially a plant, that lasts but one year or season; an annual plant.

6. (n.) A Mass for a deceased person or for some special object, said daily for a year or on the anniversary day.