a small hill, a place name with Chichimec origins and which Pomar does not explain, but which seems to have the same etymological origins as Tetzcoco (see the attestations)
Sarah Cline, "The Book of Tributes: The Cuernavaca-region Censuses," in James Lockhart, Lisa Sousa, and Stephanie Wood, eds., Sources and Methods for the Study of Postconquest Mesoamerican Ethnohistory (Eugene, OR: Wired Humanities Project, e-book, 2007.