to read books or relate accountings (see Molina); literally, to speak a book, read aloud
Alonso de Molina:
amoxitoa. n. (pret. onamoxito.) leer libros, o relatar procesos. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 5v. col. 2. Thanks to Joe Campbell for providing the transcription.