ἀμφιθέατρος
From LSJ
ἀναβάντα γὰρ εἰς τὴν ἀκρόπολιν, καὶ διὰ τὴν ὑπερβολὴν τῆς λύπης προσκόψαντα τῷ ζῆν, ἑαυτὸν κατακρημνίσαι → for he ascended the acropolis and then, because he was disgusted with life by reason of his excessive grief, cast himself down the height
English (LSJ)
ον,
A having seats for spectators all round, of the Roman circus, ἀ. ἱππόδρομος D.H.4.44:- also στοά Id.3.68; στάδιον IGRom.4.861 (Laodicea ad Lycum): esp. neut. as Subst., -θέατρον, τό, amphitheatre, IGRom.1.1024.27 (Berenice, i B.C.), Str.14.1.43, J.AJ15.8.1, Arr.Epict.1.25.27, Procop.Goth.3.23, etc.
German (Pape)
[Seite 139] ἱππόδρομος, eine amphitheatralische Rennbahn, Dion. Hal. 4, 44.