ἱππόκαμπος
From LSJ
μηδ' εἰς ὀρχηστρίδος εἰσᾴττειν, ἵνα μὴ πρὸς ταῦτα κεχηνὼς μήλῳ βληθεὶς ὑπὸ πορνιδίου τῆς εὐκλείας ἀποθραυσθῇς → and not to dart into the house of a dancing-woman, lest, while gaping after these things, being struck with an apple by a wanton, you should be damaged in your reputation
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.