to make something old for (or that belongs) to someone else (see Molina)
IPAspelling:
isolwiɑ
Alonso de Molina:
izolhuia. nitetla. (pret. onitetlaizolhui.) enuejecer algo a otro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 33v. col. 1. Thanks to Joe Campbell for providing the transcription.