to have good luck or fortune, or manage to do what was intended, or searched for (see Molina)
Alonso de Molina:
ipan naci (pret. ipan onacic.) tener buena dicha, o acertar conlo que pretendia, o buscaua. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 41v. col. 2. Thanks to Joe Campbell for providing the transcription.