(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.

(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.

(idiomatic) Absolutely not.

plural of non-leap year

A series of conflicts between France and England, lasting 116 years from 1337 to 1453.

plural of year-bird

Blyth's hornbill (Rhyticeros plicatus)

(law) A year in the reign of a monarch, beginning on the day of accession, the set of which are numbered ordinally. Formerly laws in the United Kingdom were identified in part by the regnal year of the monarch, and this practice is still followed in some Commonwealth countries.

Of the age of one year.

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