tlexochtli.

Headword: 
tlexochtli.
Principal English Translation: 

ember(s), coal (see Molina)

Orthographic Variants: 
tlexuchtli
Alonso de Molina: 

tlexochtli. brasa o asqua.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 147v. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

iuhquin cuecuepocatiuh tlexuchtli, cequi vevei = it seemed to explode into coals, some large
James Lockhart, We People Here: Nahuatl Accounts of the Conquest of Mexico, Repertorium Columbianum v. 1 (Los Angeles: UCLA Center for Medieval and Renaissance Studies, 1993), 242.

Auh inic valneztia iuhquin vei tlexuchtli = It appeared like a great blazing coal as it came
James Lockhart, We People Here: Nahuatl Accounts of the Conquest of Mexico, Repertorium Columbianum v. 1 (Los Angeles: UCLA Center for Medieval and Renaissance Studies, 1993), 242.

themes: 
Fire, Tobacco, Incense