to form, to fabricate, to mold, or to engender (see Molina)
Alonso de Molina:
tlatlacatilia. ni. (pret. onitlatlacatili.) formar, fabricar o reduzir a forma, o engendrar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 136v. col. 2. Thanks to Joe Campbell for providing the transcription.