τους φίλους λόγων τέχναιν επαίδευσας → Using 2 artifices, you educated (taught) those who love rhetoric.
ūrus: i, m. Celtic,
I a kind of wild ox, a ure-ox, urus, Caes. B. G. 6, 28; Plin. 8, 15, 15, § 38; Verg. G. 2, 374; 3, 532; cf. Macr. S. 6, 4 fin.>