something hidden so that it won't be seen by others (see Molina)
Alonso de Molina:
tlayyantli. cosa escondida, porque no la vean los otros. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 121v. col. 1. Thanks to Joe Campbell for providing the transcription.