one who speaks without a purpose, or falsely, vainly (see Molina)
Alonso de Molina:
tlapictlatoqui. hablador assi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 132r. col. 1. Thanks to Joe Campbell for providing the transcription.