A.such an one, so-and-so, always with Art., “ὁ δεῖνα” Ar.Ra.918, etc.; “τὸν δεῖνα τὸν τοῦ δεῖνα” Id.Th.622; “ὁ δεῖνα τοῦ δεῖνος τὸν δεῖν᾽ εἰσήγγειλεν” D.13.5; “ἃ ἂν ὁ δ. ἢ ὁ δ. εἴπῃ” Id.2.31; “ὁ δ. καὶ ὁ δ.” Arist.Rh.1416a23; “ἡ δεῖνα” Ant.Lib.22; τὸ δ., euphem. for τὸ πέος, Ar.Ach.1149, cf. Sch.Luc.Bis Acc.23; τὸ δ. δ᾽ ἐσθίεις; do you eat such a fish? Antiph.129.6: in gen., ἐμὸς ἢ τοῦ δεῖνος mine or some other's, Arist.Pol.1262a3: dat., “τῷ δεῖνι μεμφόμενος” D.20.104, cf. 37.56: pl., “οἱ δεῖνες” Id.24.180; “τῶν δείνων” Id.20.106.
II. τὸ δ. in Com. as an interjection to express an idea which suddenly strikes one, by the way, mark you, Ar.V.524, Pax 268, etc.: in later Prose, Luc.Vit.Auct.19.