itetzinco axihualiztli sacramento.

(a loanword from Spanish)

itetzinco axihualiztli sacramento.
Principal English Translation: 

communion or the union with the sacrament of the alter (see Molina) (partly a loanword from Spanish, sacramento, the sacrament)

Orthographic Variants: 
itetzinco axiualiztlisacramento
Alonso de Molina: 

itetzinco axiualiztlisacramento. comunion o allegamiento al sacramento del altar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 42v. col. 2. Thanks to Joe Campbell for providing the transcription.