ehuahuahuana.

Headword: 
ehuahuahuana.
Principal English Translation: 

to remove the flesh from or otherwise prepare hides (see Molina)

Orthographic Variants: 
euauauana
Alonso de Molina: 

euauauana. n. (pret. oneuauauan.) descarnar o adobar cueros.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 29v. col. 1. Thanks to Joe Campbell for providing the transcription.