atecocolli.

Headword: 
atecocolli.
Principal English Translation: 

a water snail (see Molina)

Orthographic Variants: 
atecuculli
IPAspelling: 
ɑːtekokolli
Alonso de Molina: 

atecuculli. caracol de agua.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 7v. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Iuh quito atecocolpil, aye nel toxaxamacayan. = So said the little water snail: Truly, the hour for our being crushed is never.
Thelma D. Sullivan, "Nahuatl Proverbs, Conundrums, and Metaphors, Collected by Sahagún," Estudios de Cultura Náhuatl 4 (1963), 124–125.