Thank you for over 7.5 million views of the SuccuWiki!
Encyclopedia Mythica - Succubus
Definition of Succubus by Encyclopedia Mythica
In medieval European folklore, a female demon (or evil spirit) who visits men in their sleep to lie with them in ghostly sexual intercourse. The man who falls victim to a succubus will not awaken, although may experience it in a dream. The male counterpart is the incubus.