ἀποκοιλαίνω

From LSJ

τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream

Source

Spanish (DGE)

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