for there to be a subtle and delicate breeze (see Molina)
Orthographic Variants:
piaciuhtoc eecatl
Alonso de Molina:
piaciuhtoc eecatl. correr viento sotil y delgado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 81v. col. 1. Thanks to Joe Campbell for providing the transcription.