chiahuiztli.

Headword: 
chiahuiztli.
Principal English Translation: 

a waxy, greasy bodily fluid, possibly semen; also, seems to be the root of the Hispanized term chahuistle, which may refer to fungus and insect infestations (Gene C. Wilkens, Good Farmers, 1990, p. 48, note 7)

Orthographic Variants: 
chiauiztli
Alonso de Molina: 

chiauiztli. humor.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 19v. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in Spanish: 

"humor del cuerpo"
Rémi Siméon, 1996, 94

themes: 
Agriculture, Gardens, Stockraising
Anatomy
Health, Sickness, Wellness, Medicine
Sexuality, Fertility