a stone such as marble or jasper (see Molina; Engl. transl. by SW)
Orthographic Variants:
achalchiuitl
IPAspelling:
ɑːtʃɑːltʃiwitɬ
Alonso de Molina:
achalchiuitl. piedra como marmol o de jaspe. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 2r. col. 1. Thanks to Joe Campbell for providing the transcription.