Webster's Revised Unabridged Dictionary · 1913

Senile

Senile , adjective

[Latin senilis, from senex, gen. senis, old, an old man: compare French sénile. See Senior.]

Of or pertaining to old age; proceeding from, or characteristic of, old age; affected with the infirmities of old age; as, senile weakness.
Senile maturity of judgment. — Boyle
Collocations (1)
Senile gangrene (Medicine) , a form of gangrene occuring particularly in old people, and caused usually by insufficient blood supply due to degeneration of the walls of the smaller arteries.