she-demon

plural she-demons

1. A female demon.

   When night had fallen, the she-demon stole forth toward the hall, which she entered unheard and unseen.

   1961, Norma Lorre Goodrich, “Beowulf”, in The Medieval Myths, New York: The New American Library, page 33

   1 more example

   If some were akin to the Formori of the baleful fogs in Irish mythic history and the Mallt-y-nos, those she-demons of marshy lands immortalised by the Welsh bards, creatures huge and uncouth "with grey and glaring eyes," there were others who exceeded in beauty anything human.

   1922, Eleanour Sinclair Rohde, The Old English Herbals, London: Longmans, Green and Co., page 14