In Jewish mythology and the Testament of Solomon, the female demon associated with miscarriages and harm to infants is Abyzou.
Abyzou appears in the Testament of Solomon under the name Obizuth. In that late-antique demonological text, Solomon encounters and interrogates demons, asking about their powers and activities. Abyzou says that she wanders at night looking for women about to give birth and attacks their babies, making her a personification of dangers surrounding childbirth and infancy.
The text gives her a frightening appearance: a greenish, shining face, serpent-like disheveled hair, and a body otherwise concealed in darkness. Solomon ultimately orders her to be bound and publicly displayed near the Temple. Her story reflects an ancient attempt to explain reproductive loss, newborn death, and other afflictions through a supernatural agent.
Abyzou is sometimes mixed up with Lilith, Agrat, or Naamah, all figures associated with female demons in Jewish or neighboring traditions. They are not interchangeable: Abyzou’s distinctive role is her attack on pregnant women, newborns, and childbirth.