μυριοστύς
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)
ύος, ἡ,
A body of ten thousand, X.Cyr.6.3.20.
German (Pape)
[Seite 220] ύος, ἡ, eine Zahl, Menge von zehntausend, Xen. Cyr. 6, 3, 20 u. Sp.