σφαιριστικός
From LSJ
τὸ ἓν καὶ τὸ ὂν πολλαχῶς λέγεται → the term being and the term one are used in many ways, one and being have various meanings, one and being have many senses
English (LSJ)
ή, όν,
A of or for playing at ball, ἐπιμέλεια -ωτάτη Arr.Epict.2.5.20; σφαιριστικός, ὁ, a clever player, Gal.6.154, Poll.9.107; περὶ -κῆς (sc. τέχνης), title of a work by Timocrates, ap.Ath.1.15c.