Lewis Short
littĕrĭo | lītĕr- (noun M) : (), , litterae
* A language-master, in a contemptuous sense: appellare (aliquem) loquacem talpam, et purpuratam simiam, et litterionem Graecum,Amm. 17, 11, 1; so, Graecus, Aug. adv. Leg. et Proph. 1, § 52.
Charlton T. Lewis, Charles Short, A Latin Dictionary