NOUN (1)

1. a native or inhabitant of Mexico;


ADJECTIVE (1)

1. of or relating to Mexico or its inhabitants;
- Example: "Mexican food is hot"

The Collaborative International Dictionary of English v.0.48:

Mexican \Mex"i*can\, prop. a.
   Of or pertaining to Mexico or its people. -- n. A native or
   inhabitant of Mexico.
   [1913 Webster]

   Mexican poppy prop. n. (Bot.), a tropical American herb of
      the Poppy family (Argemone Mexicana) with much the look
      of a thistle, but having large yellow or white blossoms.


   Mexican tea prop. n. (Bot.), an aromatic kind of pigweed
      from tropical America (Chenopodium ambrosioides).
      [1913 Webster]

WordNet (r) 3.0 (2006):

Mexican
    adj 1: of or relating to Mexico or its inhabitants; "Mexican
           food is hot"
    n 1: a native or inhabitant of Mexico