to persevere, continuing that which was started; or, to take something in exchange for something else
IPAspelling:
senketsɑ
Alonso de Molina:
cenquetza. nitla. (pret. onitlacenquetz.) perseuerar continuando lo comenzado, o tomar algo a destajo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 17v. col. 1. Thanks to Joe Campbell for providing the transcription.