φιλοσοφίαν καινὴν γὰρ οὗτος φιλοσοφεῖ → this man adopts a new philosophy
P. and V. γυμνάζειν; see exercise.
drill holes in: P. and V. τετραίνειν (acc.), τρυπᾶν (acc.) (Sophocles, Fragment).
instrument for drilling holes: P. and V. τρύπανον, τό (Eur., Cyclops).