on the cross
(at the root, a loanword from Spanish, cruz, cross)
Alonso de Molina:
cruztitech. enla cruz. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 25v. col. 1. Thanks to Joe Campbell for providing the transcription.