to have a custom or a habit, or to become natural (something that someone does) (see Molina)
Alonso de Molina:
iuhca noyeliz. tener costumbre o habito hecho, o ser le ya connatural lo que haze. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 43v. col. 1. Thanks to Joe Campbell for providing the transcription.