μαργαριτάριν
From LSJ
ὁκόσα γὰρ ὑπὰρ ἐκτρέπονται ὁποίου ὦν κακοῦ, τάδε ἐνύπνιον ὁρέουσι ὥρμησε → for whatever, when awake, they have an aversion to, as being an evil, rushes upon their visions in sleep (Aretaeus, Causes & Symptoms of Chronic Disease 1.5.6)
Greek (Liddell-Scott)
μαργαριτάριν: ἀντὶ μαργαριτάριον, τό, = μαργαρίτης, Θεοφάν. 351, 11.