1One's grandmother — the mother of one's father or mother. The reading そぼ is the formal way to refer to one's own grandmother when speaking to others (おばあちゃん/おばあさん is used at home or when addressing her directly); readings like ばば are old-fashioned or dialectal.
週末は祖母の家に行って、一緒に夕食を食べた。
On the weekend I went to my grandmother's house and had dinner with her.
祖母は若いころ裁縫が得意だったそうだ。
I hear my grandmother was good at sewing when she was young.
彼女は毎年正月に祖母に会いに実家へ帰る。
She goes back to her hometown every New Year to see her grandmother.
祖母は今年で八十歳になる。
My grandmother is turning eighty this year.