τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream
subs.
P. and V. δίνη, ἡ (Plat. but rare P.; also Ar.). v. intrans. P. and V. δινεῖσθαι (Plat. but rare P.).