a tribute item; it took the place of tequixaxalli in Quauhtinchan in 1534 (Cuauhtinchan, sixteenth century) Historia Tolteca-Chichimeca, eds. Paul Kirchhoff, Lina Odena Güemes, y Luis Reyes García (México: CISINAH, INAH-SEP, 1976), 231–232.
fourteenth ruler of the Mexica (fourth ruler in Tenochtitlan; fourteenth when counting from their time in Aztlan); also, a person's name (attested male), meaning "Obsidian Snake" Annals of His Time: Don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, James Lockhart, Susan Schroeder, and Doris Namala, eds. and transl. (Stanford: Stanford University Press, 2006), 144–5. And, for the translation, see: Marc Zender, "One Hundred and Fifty Years of Nahuatl Decipherment," The PARI Journal 8:4 (Spring 2008), 25.
a staff with a crosspiece; a stick instrument, resting with the feet, and with the hands; or, the name of an instrument of one who works obsidian All of these definitions come from A. Wimmer and the Gran Diccionario Náhuatl, https://gdn.iib.unam.mx/diccionario/itzcolotli, with translations here to English--as needed--by Stephanie Wood.
a person's name (attested as male), a title, or perhaps a person affiliated with a place called Itzcotlan; the name clearly has something to do with obsidian (itztli)