a physician, or an augurer (see Molina, who apparently spells this term as ticiti, when it should probably be ticitl)
IPAspelling:
tiːsiti
Alonso de Molina:
ticiti. ni. (pret. oniticitic.) ser, o tener officio de medico, o de agorero. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 113r. col. 1. Thanks to Joe Campbell for providing the transcription.