Jisho

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Noun
1. nightmare
2. incubus; succubus; demon appearing in a dream
Wikipedia definition
3. IncubusAn incubus (nominal form constructed from the Latin verb, incubo, incubare, or "to lie upon") is a demon in male form who, according to a number of mythological and legendary traditions, lies upon sleepers, especially women, in order to have intercourse with them. Its female counterpart is the succubus. An incubus may pursue sexual relations with a woman in order to father a child, as in the legend of Merlin.
Read “Incubus” on English Wikipedia
Read “夢魔” on Japanese Wikipedia
Read “Incubus” on DBpedia

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