something thin, such as a cloak or a group of trees
IPAspelling:
kɑkɑjɑktik
Alonso de Molina:
cacayactic. cosa rala, como manta, o arboleda. &c. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 10v. col. 1. Thanks to Joe Campbell for providing the transcription.