something uncertain that makes one vacillate (see Molina)
Alonso de Molina:
tetzotzon. cosa dudosa que haze bacilar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 111v. col. 1. Thanks to Joe Campbell for providing the transcription.