(4 syl.). A giant who was deprived of his left eye by Apollo, and of his right eye by Hercules.
(4 syl.). The nightmare. (Greek, ephialtes, an incubus; from epihallomai, to leap upon.)
“Feverish symptoms all, with which those who are haunted by the night-hag, whom the learned call Ephialtes, are but too well acquainted.” —Sir W Scott: The Antiquary, chap. x.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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