Liddell-Scott-Jones

διατριβή (diatribē) pastime ^G:N-F

διατριβή, ἡ,

wearing away, especially of Time, way or manner of spending, χρόνου τε διατριβὰς.. ἐφηῦρε.. πεσσοὺς κύβους τε pastimes, [Refs 5th c.BC+]

__1 pastime, amusement, [Refs 5th c.BC+]materiem jocandi, [Refs 1st c.AD+]; place of amusement, [Refs 4th c.BC+]
__2 serious occupation, study, etc., τοὺς ἐν φιλοσοφίᾳ καὶ τῇ τοιᾷδε δ. τεθραμμένους [Refs 5th c.BC+]
__2.b discourse, τὰς ἐμὰς δ. καὶ τοὺς λόγους [Refs 5th c.BC+]
__2.c short ethical treatise or lecture, δ. βραχέος διανοήματος ἠθικοῦ ἔκτασις [Refs 2nd c.AD+]
__2.d school of philosophy, [Refs 2nd c.AD+]; also, a place of teaching, school, ἡ ἐν τῷ κήπῳ δ. [Refs 4th c.BC+]
__3 way of life, passing of time, δ. ἐν ἀγορᾷ [Refs 5th c.BC+]; ἡ ἐν Σικελίᾳ δ. stay there, [Refs 5th c.BC+]; ποιεῖσθαι ἐν τῷ ὑγρῷ τὴν δ., ἐν τῇ γῇ, [Refs 4th c.BC+]
__4 place of resort, haunt, τὰς ἐν Λυκείῳ δ. [Refs 5th c.BC+]
__II in bad sense, waste of time, loss of time, delay, with or without χρόνου, [Refs 5th c.BC+]; χρόνου δ. ἐμποιεῖν, παρέχειν, [Refs 5th c.BC+]; διατριβὴν ποτῷ ποιεῖν prolong a carouse, [Refs 2nd c.AD+]
__III Rhet., occasion for dwelling on a subject, [Refs 4th c.BC+]
__IV continuance, permanence, [Refs]
__V obscene meaning, ={συνουσία}, [Refs 6th c.AD+]