yolcayotl.

Headword: 
yolcayotl.
Principal English Translation: 

a slug or something that is slimy (see Molina)

IPAspelling: 
joːlkɑːjoːtɬ
Alonso de Molina: 

yolcayotl. limaza o babaza.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 39v. col. 2. Thanks to Joe Campbell for providing the transcription.