An elderly person; a senior — a polite way to refer to someone older or of advanced age.
電車でお年寄りに席を譲った。
I gave my seat to an elderly person on the train.
お年寄り向けの健康教室が地域で開かれる。
A health class for seniors will be held in the community.
お年寄りの意見を大切にするべきだ。
We should value the opinions of the elderly.