What is "lilin"

In Mesopotamian demonology, Lilin were hostile night spirits that attack men. They had less power than gods. They were also the Hebrew word for both the Succubus and Incubus spirits of other legends as a single concept that would be both of them together but the word only included those Succubae and Incubi that were the sons and daughters of a Lilith like creature or even Lilith herself, for those older, more physically and mentally mature spirits were known as the Lilitu in Hebrew mythology

In Jewish mythology, Lilin (Hebrew: לילין) is a term for night spirits. In Targum Sheni Esther 1:3 King Solomon, who commanded all spirits, had the lilin dance before. Lilith and her children, the Lilim, are considered to be night spirits. Lilith is also considered by older Jewish tradition to be Cain's wife.

In the Syriac Apocalypse of Baruch, Lilin come from the desert and they are similar to shedim.