(rare, idiomatic) Extraordinary compared to most in one's age group; characteristic of an older person.

(historical) A conflict fought largely within the Holy Roman Empire from 1618 to 1648.

(law, England & Wales, formal, misleading) An estate in land held for a term of years of either a specified length or on a periodic basis, and which is not a term of years determinable (though may be determinable for other reasons); a leasehold estate in land.

(law, England & Wales, formal, historical) An estate in land held for a term of years which determined on the deaths of certain individuals, or the cessation of certain life interests.

plural of year of our Lord

(astronomy) the time it takes for the Solar System to orbit around the center of the Milky Way Galaxy, estimated to be from 225 to 250 million years.

Of the age of one year.

Approximately at the end of one year and the beginning of the next.

Alternative spelling of yearbook

(biology) A year in which salmon return to spawn in a particular river