おばあちゃんっ子
Meanings
1
grandmother-loving child; child who loves their grandmother
Describes a child who is especially attached to their grandmother, often preferring her company.
See also: おばあちゃん子 (おばあちゃんこ)
My daughter is a grandmother-loving child and always wants to go to her grandmother's house on weekends.
2
child doted on by their grandmother; grandmother's pet
Focuses on the grandmother's side: a child who receives special affection and spoiling from their grandmother.
See also: おばあちゃん子 (おばあちゃんこ)
He is a grandmother's pet and grew up being spoiled by her.