See an image that represents chicahuac in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
in moteneva in chicavac, in vapavac, in tlatolli in mitoa in chichinauhtiuh, in pupucatiuh in nelhuillo in nemaco = what are called the strong, the harsh words, which are said, burned, gave off smoke; what was spoken, what was given (central Mexico, sixteenth century)
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 237.
"1625...niman huel chicahuac Ynic çehuac...." = "1625...Then it froze very hard...." (Historia cronológica de la N.C. de Tlaxcala, 1310–1689)
Frances Krug, "The Nahuatl Annals of the Tlaxcala-Puebla Region," ch. 2, p. 77, Ph.D. Dissertation draft written in the 1980s, with transcriptions and translations approved by James Lockhart. Cited here by SW.