tlachialoni.

Headword: 
tlachialoni.
Principal English Translation: 

viewer (a device for viewing, seeing
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 101.

IPAspelling: 
tɬɑtʃiɑloːni
Attestations from sources in English: 

A tlachiaya seems to be another term for viewer, like tlachialoni.
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 110, note 88.

tlachialonj y centlapal imac ycac = in his other hand is the viewer
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 101.

itlachiaya = his viewer
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 111.

Attestations from sources in Spanish: 

"...en la descripción del bastón de Tezcatlipoca de los Primeros Memoriales, al bastón se le llama tlachialoni ('donde se ven las cosas')."
Michel R. Oudijk, "El almanaque médico," en El Códice Mexicanus, tomo I, eds María Castañeda de la Paz y Michel R. Oudijk, eds. (México: UNAM, 2019), 27.

themes: 
Religion (Christian)