cacallotl.

Headword: 
cacallotl.
Principal English Translation: 

a nut shell, or something similar (see Molina); not to be confused with the bird, cacalotl

IPAspelling: 
kɑhkɑlloːtɬ
Alonso de Molina: 

cacallotl. caxcara de nuez, o de cosas assi.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 10v. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Cacallotl = a place name, one of the boundaries of the Nonohualca of Tollan (Tula)
Historia Tolteca-Chichimeca, 4v. Taken from the image of the folio published in Dana Leibsohn, Script and Glyph: Pre-Hispanic History, Colonial Bookmaking, and the Historia Tolteca-Chichimeca (Washington D.C.: Dumbarton Oaks, 2009), 65. Paleography and regularization of this toponym by Stephanie Wood.