cozahuiya.

Headword: 
cozahuiya.
Principal English Translation: 

to season and dry bread or tortillas (see Molina), to turn yellow, to end up yellow (see Karttunen and attestations)

Orthographic Variants: 
cozauia, cozahuia, coçauia
IPAspelling: 
kosɑwiyɑ, koːsɑwiɑ
Alonso de Molina: 

cozauia. ni. (pret. onicozauix.) pararse amarillo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 23r. col. 1. Thanks to Joe Campbell for providing the transcription.

cozauia. tla. (pret. otlacozauiz.) sazonarse y secarse los panes.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 23r. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

COZAHUIY(A) pret: -HUIX ~ -HUIZ to turn yellow / pararse amarillo (M) See COZTIC.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 43.

Attestations from sources in English: 

coçauia = it turns yellow (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 10 -- The People, No. 14, Part 11, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 109.

themes: 
Colors
Food, Eating, Cooking