the confessional, the place where people go to confess their sins (see Molina)
Alonso de Molina:
teyolcuitiloyan. confessionario, lugar donde confiessan. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 94v. col. 2. Thanks to Joe Campbell for providing the transcription.