κατάκλεισις
From LSJ
εἰ μὴ προσέθηκα καὶ κατεσιώπησα ψυχήν μου, ὡς τὸ ἀπογεγαλακτισμένος ἐπὶ μητέρα αὐτοῦ → surely I have calmed and quieted my soul like a weaned child on its mother's shoulder
English (LSJ)
εως, ἡ,
A shutting up, closing, Gal.19.445. II completion, Nicom. ap. Theol.Ar.43. III beam resting on the pillars of the Χελώνη, Ath. Mech.18.9 (pl.).