- ephialtes (n.)
[ephialtes 词源字典]
- nightmare or demon that causes nightmares, c. 1600, from Greek Ephialtes, name of a demon supposed to cause nightmares; the ancient explanation is that it was from ephallesthai "to leap upon," which suits the sense, but OED finds "considerable" phonological difficulties with this.[ephialtes etymology, ephialtes origin, 英语词源]