noun
Affectionate child-language term for one's mother. Used by young children or in baby talk.
See also: お母ちゃん
ちゃあちゃん、だっこして!
Mommy, pick me up!
noun
Affectionate child-language term for one's grandmother. Used by young children or in baby talk.
See also: おばあちゃん
ちゃあちゃんちに遊びに行く!
I'm going to play at granny's house!