matetzotilia.

Headword: 
matetzotilia.
Principal English Translation: 

to scrub or rub something hard (see Molina; this is based upon a modern translation of sobajar); or, for something to go bad just from touching it (see Rémi Siméon, "echar a perder algo al tocarlo," de maitl y tetzoti)

IPAspelling: 
mɑtetsotiliɑ
Alonso de Molina: 

matetzotilia. nitla. (pret. onitlamatetzotili.) souajar algo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 52v. col. 2. Thanks to Joe Campbell for providing the transcription.