ἱππόκαμπος
From LSJ
τὸ κακὸν δοκεῖν ποτ' ἐσθλὸν τῷδ' ἔμμεν' ὅτῳ φρένας θεὸς ἄγει πρὸς ἄταν → evil appears as good to him whose mind the god is leading to destruction (Sophocles, Antigone 622f.)
English (LSJ)
ὁ,
A monster with horse's body and fish's tail, on which the sea-gods rode, Men.831; ἑστήκει Ποσειδῶν χάλκεος, ἔχων ἱ. ἐν τῇ χειρί Str.8.7.2, cf. Philostr.Im.1.8. 2 a small fish, the sea-horse, Dsc.2.3, Ael.NA14.20, Gal.12.362.
Greek (Liddell-Scott)
ἱππόκαμπος: ὁ, τέρας τι ἔχον σῶμα ἵππου καὶ οὐρὰν ἰχθύος ἐφ’ οὗ οἱ θαλάσσιοι θεοὶ ὠχοῦντο, Μένανδρ. ἐν Ἀδήλ. 211˙ ἑστήκει Ποσειδῶν χάλκεος, ἔχων ἱππ. ἐν τῇ χειρὶ Στράβ. 384, Φιλόστρ. 774. 2) μικρὸν θαλάσσιον ζῷον, ὁ θαλάσσιος ἵππος, Διοσκ. 2. 3, Αἰλ. π. Ζ. 14. 20, κτλ.