the world > life > source or principle of life > age > old age > [adjective] > having characteristics of old age (3)
having the appearance or marks of age; senile.
Relating to or characteristic of advanced age or long experience. Cf. grey-haired, adj. 1b, grey-headed, adj. 1b.
Of a human or other living thing. Of a person, or his or her physical or mental attributes: having the characteristics of maturity or age.