iron; a known metal (see Molina); appears to refer to a black metal
Orthographic Variants:
tliltic tepuztli
Alonso de Molina:
tliltic tepuztli. hierro, metal conocido. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 148r. col. 1. Thanks to Joe Campbell for providing the transcription.