a brothel, or a house with "bad women" (see Molina)
Alonso de Molina:
netlaneuhtilizcalli. burdel o casa de malas mugeres. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 70v. col. 1. Thanks to Joe Campbell for providing the transcription.