καταδιφθερόω
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 cover over with skins, Plu.2.664c.
German (Pape)
[Seite 1346] ganz mit Fellen überziehen, Plut. Symp. 4, 2.