the act of using a chisel; or the act of putting gold on something, making it golden (see Molina)
Alonso de Molina:
teocuitla cuicuiloliztli. el acto de labrar con sinzel. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 100v. col. 1. Thanks to Joe Campbell for providing the transcription.