suc·cu·bus ˈsəkyəbəs/ noun: succubus; plural noun: succubi ＝ a female demon believed to have sexual intercourse with sleeping men.
意外な語源だな：
Origin late Middle English: from medieval Latin succubus ‘prostitute,’ from succubare, from sub- ‘under’ + cubare ‘to lie.’ (see cubicle).
cubare (“to lie down”), from Proto-Indo-European *keu(b) (“to bend, to turn”).
(see cubicle). cubicleはＣｕｂｅから来てるの思ってた
Ｃｕｂｅ Word Origin and History for cube. 1550s, from Middle French cube (13c.) and directly from Latin cubus, from Greek kybos "a cube, a six-sided die, vertebra," perhaps from PIE root *keu(b)- "to bend, turn." ... 1580s in the mathematical sense; 1947