The latter part of (human) life. Old age begins with the deterioration of physical abilities such as sight, hearing, walking (stick required), etc. or by definition at a certain age (eg. 80 in present times), and ends in death
People of old age are often hard of hearing.
Your old age is the period of years towards the end of your life. They worry about how they will support themselves in their old age youth. the part of your life when you are old
a late time of life; "old age is not for sissies"; "he's showing his years"; "age hasn't slowed him down at all"; "a beard white with eld"; "on the brink of geezerhood