φόβητρον
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
English (LSJ)
τό,
A scarecrow, bugbear, terror, LXXIs.19.17: elsewh. always in pl. terrors, Hp.Morb.Sacr.1 (s.v.l.), Pl.Ax.367a, Ev.Luc.21.11; Τισιφόνης τὰ φ., prob. tragic masks of the Furies, AP11.189 (Lucill.).