granddad; grandpa

a grandfather / an old man; a geezer; a gramps

old man / grandfather

(familiar or childish, diminutive) title affixed to people's names: -chan / title affixed to animals

rainbow colors

(teen girl's slang) Alternative spelling of ちゃん (chan)

fine residence, shop, store; (ghost character)

(informal, possibly dialect) one's own father / (by later extension) the head or master of an establishment such as a teahouse, boathouse, etc.

(teen girl's slang) Alternative spelling of ちゃん (chan)

(Internet slang, cutesy) Alternative spelling of ちゃん (-chan)