亡ぼう子しぼうしMeanings1noundead child; deceased childA formal or literary term for a child who has died. Not used in casual conversation; more common in written contexts such as obituaries or historical texts.彼かれは亡ぼう子しの写しゃ真しんを大たい切せつに保ほ管かんしている。He carefully keeps a photograph of his deceased child.