δοῦπος
δοῦπος
δοῦπος, ὁ,
any dead, heavy sound, a thud, Il.; of the distant din of battle, the sound of footsteps, of the measured tread of infantry, the hum of a multitude, the roar of the sea, Hom.: rare in Trag.
The form γδουπέω, connects the word with κτύπος.