a beverage made with cacao (chocolate) and chile peppers (see Molina)
Orthographic Variants:
chillo cacauatl
Alonso de Molina:
chillo cacauatl. beuida de cacao con axi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 21r. col. 1. Thanks to Joe Campbell for providing the transcription.