κτυπέω
κτυπέω
κτύπος
to crash, of trees falling, Il.; of thunder, Hom., Soph.
to ring, resound, echo, Il., etc.
Causal, to make to ring or resound, χθόνα; c. dupl. acc., κτύπησε κρᾶτα πλαγάν made the head ring with a blow, Eur.: —hence again in Pass. to ring, resound, Ar.