ψοφέω (psopheō)

1. to make an inarticulate noise, to sound, make a noise , (Euripides); ψοφεῖ λάλον τι sounds chatter-like , as if it were tested like a pot, to see if it were cracked, (Aristophanes Comicus); ὥσπερ κύμβαλον ψοφεῖ (Xenophon Historicus)
2. with accusative, ψοφεῖν τὰς θύρας to knock at the door inside, to shew that some one was coming out, Menand.:—;also of the door (intransitive), εἰ αἱ θύραι νύκτωρ ψοφοῖεν, i. e. if they were heard to open , (Lysias Orator) (ML)