ἀποστομόω
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
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.