σπάρξαι

From LSJ

τίς ἐς σὸν κρᾶτ' ἐπύκτευσεν → who hit you with the fist on the head, who has been pummeling your head

Source

Greek (Liddell-Scott)

σπάρξαι: «σπαργανῆσαι. σπαράξαι» Ἡσύχ.