also: おにっこ
noun
child born with teeth
Traditional term for a baby born with teeth already erupted, sometimes considered an ill omen in folklore.
昔話では、鬼子は生まれつき歯が生えていると恐れられた。
In old tales, a child born with teeth was feared as an onigo.
noun
child unlike its parents; changeling
Refers to a child who does not resemble its parents, sometimes with a supernatural connotation like a changeling. Rare in modern usage.
鬼子は親に似ぬ子を指す古い言葉だ。
Onigo is an old word for a child who does not resemble its parents.
noun
wild child; badly-behaved child
Used for a child who is unruly, mischievous, or difficult to control. Can be used figuratively.
あの子は近所で有名な鬼子だ。
That kid is known around the neighborhood as a little terror.