Definition of "Age" :

noun: how long something has existed

"It was replaced because of its age."

noun: a time of life (usually defined in years) at which some particular qualification or power arises

"She was now of school age."

noun: a late time of life

"Old age is not for sissies."

noun: a prolonged period of time

"We've known each other for ages."

noun: an era of history having some distinctive feature

"We live in a litigious age."

verb: grow old or older

"She aged gracefully."

verb: begin to seem older; get older

"The death of his wife caused him to age fast."

verb: make older

"The death of his child aged him tremendously."