pnigalion
A nocturnal monster in Ancient Greece that would choke its victims; incubus; nightmare.
historical, uncountable
Because the Greeks considered being choked or strangled to be one consequence of a night-mare attack, the entity was also called pnigalion (“throttler”).
sleep paralysis; nightmare
archaic, uncountable
Incubus (synonyms, Pnigalion, ephialtes, epibole ) .— It is an elementary form of epilepsy .
Where it comes from
From New Latin pnīgalion, from Ancient Greek πνῑγαλίων (pnīgalíōn, “nightmare”), from πνῑ́γω (pnī́gō, “to throttle, strangle”).
Adapted from the Wiktionary entry pnigalion (CC BY-SA 4.0).