ἀποκοιλαίνω

From LSJ

κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown

Source

Spanish (DGE)

hacer cóncavo, Ἀρχ.Ἐφ. 1923.45 (Oropo).