one who reveals something that was not known (see Molina)
IPAspelling:
kineːʃtiɑːni
Alonso de Molina:
quinextiani. reuelador deloque no se sabia. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 90r. col. 2. Thanks to Joe Campbell for providing the transcription.