D defs.my
Entry 1 sense Webster, 1913

Senile

/sēn'-īlˌ/ · Se·nile · IPA /ˈsinaɪl/
01 a. Of or pertaining to old age; proceeding from, or characteristic of, old age; affected with the infirmities of old age; as, senile weakness.
  1. 1.
    Of or pertaining to old age; proceeding from, or characteristic of, old age; affected with the infirmities of old age; as, senile weakness.
Phrases & compounds
Senile gangrene — 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.