(folklore) a small grotesque supernatural creature that makes trouble for human beings

frightening spirit 3. in Islamic folklore, ademon which steals bodies from graves

the unwritten lore (stories and proverbs and riddles and songs) of a culture

In popular folklore, an undead being in human form that survives by sucking the blood of living people, especially at night, A kind of spectral being or ghost still possessing a human body, which, according to a superstition existing among the Slavic and other races on the lower Danube, leaves the grave during the night, and maintains a semblance of life by sucking the warm blood of living men and women while they are asleep, (folklore) a corpse that rises at night to drink the blood of the living