noun
grandpa; gramps
Childish or affectionate term for one's own grandfather, similar to 'grandpa' or 'gramps' in English. Used by young children or within the family.
See also: おじいさん
じいじ、遊ぼう!
Grandpa, let's play!
今日はじいじの家に行くんだ。
I'm going to Grandpa's house today.