a frayed or poorly woven cloak or cloth (see Molina)
IPAspelling:
kɑkɑʃɑltik
Alonso de Molina:
cacaxaltic. manta rala y maltexida. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 10v. col. 2. Thanks to Joe Campbell for providing the transcription.