the act of chin whiskers appearing for the first time; the start of a beard (see Molina)
IPAspelling:
teːntsonkiːsɑlistɬi
Alonso de Molina:
tentzonquizaliztli. el acto de nacer las baruas. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 100r. col. 1. Thanks to Joe Campbell for providing the transcription.