εὔγραμμον
From LSJ
ἀλλήλων τὰ βάρη βαστάζετε, καὶ οὕτως ἀναπληρώσετε τὸν νόμον τοῦ Χριστοῦ → bear each other's burdens, and in that way fulfill the anointed King's Law (Galatians 6:2)
Russian (Dvoretsky)
εὔγραμμον: τό изящный очерк, тонкая линия (τῶν ὀφρύων Luc.).