Na·hua·tl 
(näwät′l)
(näwät′l)n. pl. Nahuatl or Na·hua·tls
1. A member of any of various Indian peoples of central Mexico, including the Aztecs.
2. The Uto-Aztecan language of the Nahuatl.
[Spanish náhuatl, from Nahuatl, that which pleases the ear, from nahua-, audible, intelligent, clear.]