incubus
n
(pl ~es or -bi )
(a) male evil spirit formerly supposed to have sex with a sleeping woman 夢淫妖(傳說與熟睡女子交合的妖魔). Cf 參看 succubus.
(b) (rhet 修辭) thing (eg an approaching examination, an unpaid debt) that oppresses sb like a nightmare 給某人造成巨大壓力的事物(似惡夢中所見的可怕事物, 如臨近的考試、 未清償的債務).