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), 230.
something evil (see Karttunen); or, something rotten or decaying; the Gran Diccionario Náhuatl includes what would be "spot or rust on a plant"--"Tache, rouille (d'une plante)"--and "Baho."
(central Mexico, 1615) see 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), 304–305.