The Collaborative International Dictionary of English v.0.48:

Aztec \Az"tec\, a.
   Of or relating to one of the early races in Mexico that
   inhabited the great plateau of that country at the time of
   the Spanish conquest in 1519. -- n. One of the Aztec race or
   people.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Aztec
    n 1: a member of the Nahuatl people who established an empire in
         Mexico that was overthrown by Cortes in 1519

U.S. Gazetteer Places (2000):

Aztec, NM -- U.S. city in New Mexico
   Population (2000):    6378
   Housing Units (2000): 2545
   Land area (2000):     9.727566 sq. miles (25.194279 sq. km)
   Water area (2000):    0.075668 sq. miles (0.195980 sq. km)
   Total area (2000):    9.803234 sq. miles (25.390259 sq. km)
   FIPS code:            05780
   Located within:       New Mexico (NM), FIPS 35
   Location:             36.826046 N, 107.995595 W
   ZIP Codes (1990):     87410
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Aztec, NM
    Aztec