a manifestation of blame or guilt; or, a denunciation (see Molina)
Alonso de Molina:
tetlatlacolnextiliztli. manifestacion desta manera. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 109v. col. 1. Thanks to Joe Campbell for providing the transcription.