ἀποστομόω
From LSJ
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
English (LSJ)
A stop the mouth of, Cerc.11.7: hence, block, stop up, τὰς διώρυχας Plb.Fr.117. II = ἀποστομίζω 1, ὅπλα ἀπεστομωμένα τὰς ἀκμάς D.H.6.14, cf. Luc.Tim.10.