someone who listens to the people, who hears what's being said (see Molina)
Alonso de Molina:
tecacaquini. assechador, que escucha lo que se dize. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 91v. col. 1. Thanks to Joe Campbell for providing the transcription.