σφαιριστήριον
From LSJ
γράμματα στικτὰ οὐ ποιήσετε ἐν ὑμῖν· ἐγώ εἰμι κύριος ὁ θεὸς ὑμῶν → you shall not make tattooed signs on yourselves; I am your Lord God
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.).