tlecuezalnenepilli. lengua de llama de fuego. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 147r. col. 1. Thanks to Joe Campbell for providing the transcription.
Attestations from sources in English:
Would this be a neologism, or is the tongue element a coincidence? (SW)