cacahuanantli.

Headword: 
cacahuanantli.
Principal English Translation: 

tree planted to give shade to cacao shrubs (see Karttunen)

Orthographic Variants: 
cacahuanāntli
IPAspelling: 
kɑkɑwɑnɑːntɬi
Frances Karttunen: 

CACAHUANĀN-TLI tree planted to give shade to cacao shrubs / árbol que se planta en las sementeras de cacao para hacerle sombra (R) [(1)Rp.65]. R fails to mark the vowel of the fourth syllable long. See CACAHUA-TL, NĀN-TLI.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 18.

Attestations from sources in English: 

It appears that mother is part of the word, protecting the shrubs under her care. The vowel length for nantli, mother, is the same.