σφαιριστήριον
From LSJ
δυνατὰ δὲ οἱ προύχοντες πράσσουσι καὶ οἱ ἀσθενεῖς ξυγχωροῦσιν → the strong do what they will; the weak do what they must | the strong do what they can and the weak suffer what they must | they that have odds of power exact as much as they can, and the weak yield to such conditions as they can get
English (LSJ)
τό,
A ball-court, Thphr. Char.5.9, IG11(2).199A110 (Delos, iii B.C.), BCH23.566 (Delph., iii B.C.), Phld.Herc.1457.7, POxy.1450.5 (iii A.D.).