LSJ
ου, ὁ, Dor. ἱπποδιώκτας, = ἱππηλάτης, driver or rider of steeds, Theoc. 14.12, Hsch. ; a kind of gladiator, IGRom. 4.1455 (Smyrna).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ὁ, Rossetreiber, wie ἱππηλάτης, Theocr. 14.12.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)