1.  nahuatl(n = noun.person) - a member of any of various Indian peoples of central Mexico;
is a kind of american indian, indian, red indian
is a member of federation of tribes, tribe
has particulars: aztec, toltec

2.  nahuatl(n = noun.communication) - the Uto-Aztecan language spoken by the Nahuatl;
is a kind of uto-aztecan, uto-aztecan language

nahuatl, n. & adj.
--n.
1 a member of a group of peoples native to S. Mexico and Central America, including the Aztecs.
2 the language of these people.
--adj. of or concerning the Nahuatl peoples or language.

Derivative:
Nahuatlan adj.

Etymology:
Sp. f. Nahuatl