ixcueponiliztli.

Headword: 
ixcueponiliztli.
Principal English Translation: 

crossed eyes

Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan (Norman: University of Oklahoma Press, 1997), 285.

IPAspelling: 
iːʃkwepoːnilistɬi
Alonso de Molina: 

ixcueponiliztli. entortamientode ojo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 45r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

aocmo tle ypayao = Crossed eyes. Nothing is now its remedy (central Mexico, sixteenth century)
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 285.