cuauhocuilin.

Headword: 
cuauhocuilin.
Principal English Translation: 

a worm that eats wood (see Molina and the DFC, which has an image and a description)
Digital Florentine Codex/Códice Florentino Digital, edited by Kim N. Richter and Alicia Maria Houtrouw, "Book 11: Earthly Things", fol. 106r, Getty Research Institute, 2023. https://florentinecodex.getty.edu/en/book/11/folio/106r/images/0 Accessed 9 November 2025.

Orthographic Variants: 
quauh ocuilin, quauhocuilin, cuauhocuilin, cuauh ocuilin
Alonso de Molina: 

quauh ocuilin. carcoma o gusano de madera.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 86v. col. 2. Thanks to Joe Campbell for providing the transcription.