the act of stepping on, putting pressure on, or putting stress on something (see Molina)
IPAspelling:
tɬɑʃihʃilistɬi
Alonso de Molina:
tlaxixiliztli. recalcadura, o el acto de pisar, apretar o recalcar algo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 146r. col. 2. Thanks to Joe Campbell for providing the transcription.