chiyauhcoatl.

Headword: 
chiyauhcoatl.
Principal English Translation: 

a viper or venomous snake; or a serpent who lives in a marsh (see chiyahuitl)
Gran Diccionario Náhuatl, citing Wimmer 2004, who cites the Florentine Codex, https://gdn.iib.unam.mx/diccionario/chiyahuitl

Orthographic Variants: 
chiyauhcohuatl
See also: 
chiyahuitl.