Definition of age:
(n) :
the whole duration of a being, whether animal, vegetable, or other kind; lifetime; that part of the duration of a being or a thing which is between its beginning and any given time
"what is the present age of a man, or of the earth?"
(v) :
to cause to grow old; to impart the characteristics of age to; to postpone an action that would extinguish something, as a debt
"grief ages us."