to withdraw in war (see Molina, who gives the example in the first person singular)
Alonso de Molina:
yaoc nitzinquiza. yaoc onitzinquiz. retirarse enla guerra. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 31r. col. 1. Thanks to Joe Campbell for providing the transcription.