the act of shouting, braying, crowing, etc. (see Molina)
Alonso de Molina:
tzatziztli. lo mesmo es que tzatziliztli. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 151v. col. 2. Thanks to Joe Campbell for providing the transcription.