to get full of dust or covered with dust (see Molina)
Orthographic Variants:
teppachiui
IPAspelling:
teppɑtʃiwi
Alonso de Molina:
teppachiui. ni. (pret. oniteppachiuh.) henchirse, o cubrirse de poluo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 103r. col. 2. Thanks to Joe Campbell for providing the transcription.