In medieval legend, a succubus (plural succubi; from Latin
succuba; "prostitute") is a female demon that seduces men
(especially monks) in dreams to have sexual intercourse. They
draw energy from the men to sustain themselves, often until the
point of exhaustion or death of the victim. From mythology and
fantasy, Lilith and the Lilin (Jewish), Lilitu (Sumerian) and
Rusalka (Slavic) were succubi. According to the Malleus
Maleficarum, or "Witches' Hammer", succubi would collect semen
from the men they slept with, which incubi would then use to
impregnate women. Children so begotten were supposed to be more
susceptible to the influence of demons. Honoré de Balzac wrote a
short story The Succubus  concerning a 1271 trial of a she-devil
succubus in the guise of a woman, who amongst other things could
use her hair to entangle victims. From the 16th century, the
carving of a succubus on the outside of an inn indicated that
the establishment also operated as a brothel. The appearance of
succubi varies just about as m