An Age

(countable) The whole duration of a being, whether animal, plant, or other kind, being alive.
(countable) The number of full years, months, days, hours, etc., that someone, or something, has been alive.
(countable) One of the stages of life.
(countable) The time of life at which some particular power or capacity is understood to become vested.
(countable) A particular period of time in history, as distinguished from others.
(countable) A great period in the history of the Earth.
(countable) A period of one hundred years; a century.
(countable) The people who live during a particular period.
(countable) A generation.
(countable, hyperbolic) A long time.
(countable, geology) A unit of geologic time subdividing an epoch into smaller parts.
(countable, poker) The right of the player to the left of the dealer to pass the first round in betting, and then to come in last or stay out; also, the player holding this position; the eldest hand.
(uncountable) That part of the duration of a being or a thing which is between its beginning and any given time; specifically the size of that part.
(uncountable) Mature age; especially, the time of life at which one attains full personal rights and capacities.
(uncountable) An advanced period of life; the latter part of life; the state of being old; eld, seniority.