Meaning

1. age (number of full years, months, days, hours, etc., that someone, or something, has been alive)
2. age, century (particular one hundred year period, i.e. 18th century etc.)
3. century (any period of one hundred years)
4. age (particular period of time in history, as distinguished from others)
5. age (long time)
6. (obsolete) age (advanced period of life)
7. age (great period in the history of the Earth)
8. (obsolete) eternity (unending time)