one who is suffering from cold sweats and fever (see Molina)
IPAspelling:
tetsilkiːski
Alonso de Molina:
tetzilquizqui. aterido desta manera. 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.