(idiomatic) Especially memorable and noteworthy; deserving to endure for a very long time.

(idiomatic) In a manner that produces long-lasting effects; for posterity; for a very long duration.

(Ireland, informal) for a long time

plural of aging

(statistics) The number of people in stated age ranges.

(education) An age at which a child is required to attend school.

(idiomatic, US, colloquial) A very long time.

How old one appears to be based solely on mental ability and function.

(mythology) The oldest and best of the Classical Ages of Man, when people lived innocent lives of happiness and prosperity.

The current era, characterised by the increasing importance and availability of information (especially by means of computers), as opposed to previous eras (such as the Industrial Age) in which most endeavours related to some physical process or product.