A childlike, affectionate way to refer to one's father; an informal spoken equivalent of "dad" or "daddy."
お父ちゃん、見て！僕の絵が上手にかけたよ。
Daddy, look! I drew my picture well.
小さいころ、彼はいつもお父ちゃんに抱っこしてもらっていた。
When he was little, his dad always carried him.
近所の子がうちのお父ちゃんに『おはよう』と元気に挨拶した。
A neighbor child cheerfully greeted our dad with 'Good morning.'