κατατρίβω

1. to rub down or away; hence,

2. of clothes, to wear out , (Theognis Elegiacus)

3. of persons, to wear out, exhaust , (Thucydides): —;Pass. to be quite worn out , (Aristophanes Comicus)

4. of Time, to wear it away, get rid of it , Lat. diem terere, (Demosthenes Orator): κ. τὸν βίον to employ it fully , (Xenophon Historicus); so in perfect passive to pass one's whole time , κατατέτριμμαι στρατευόμενος (Xenophon Historicus)

5. of property, to squander , (Xenophon Historicus) (ML)