land that is covered with volcanic rock (taken into Spanish as "tezontle") (see Sahagún); a certain type of soil that could be mixed with lime powder instead of sand (see Molina)
type of porous, igneous, volcanic stone (loaned to Spanish as tezontle) S. L. Cline, Colonial Culhuacan, 1580-1600: A Social History of an Aztec Town (Albuquerque: University of New Mexico Press, 1986), 237.
heavy clay Barbara J. Williams, "Pictorial Representation of Soils in the Valley of Mexico: Evidence from the Codex Vergara," Geoscience and Man 21 (1980), 51–62; see p. 54.
you (second person singular subject prefix); we (first person plural subject prefix)
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 1.