γαμματίσκιον
From LSJ
νὺξ μὲν ἐμὸν κατέχει ζωῆς φάος ὑπνοδοτείρη → sleep-giving night hath quenched my light of life | sleep-giving night covers my light of life | night, the giver of sleep, holds the light of my life
English (LSJ)
τό, Dim. of γάμμα, ornament on official dress, Lyd. Mag.2.4.