for a woman to make a rustling sound (coming from her petticoats) as she walks (see Molina) (an onomatopoetic word)
IPAspelling:
kweːkɑkɑpɑtsɑ
Alonso de Molina:
cuecacapatza. nino. (pret. oninocuecacapatz.) hazer sonido o ruydo la muger con las naguas o faldillas, quando anda. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 25v. col. 1. Thanks to Joe Campbell for providing the transcription.