to warn others to prepare for an attack in war (see Molina; see also tlatalhuia)
Alonso de Molina:
yaotlatalhuia. nite. (pret. oniteyaotlatalhui.) apercebir para la guerra. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 31r. col. 2. Thanks to Joe Campbell for providing the transcription.