cuechtli.

Headword: 
cuechtli.
Principal English Translation: 

residue (see Karttunen)

Orthographic Variants: 
cuēchtli
IPAspelling: 
kweːtʃtɬi
Frances Karttunen: 

*CUĒCH-TLI This is the second element of CALCUĒCH-TLI ‘soot’ and CUAUHCUĒCH-TLI ‘sawdust’ and apparently means ‘residue.’ It contrasts in meaning and possibly in phonological form with M’s cuechtli which refers to a type of snail or spiral shell.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 68.