Source : Webster's Revised Unabridged Dictionary (1913)

Mayan \Ma"yan\, a.
   1. Designating, or pertaining to, an American Indian
      linguistic stock occupying the Mexican States of Veracruz,
      Chiapas, Tabasco, Campeche, and Yucatan, together with a
      part of Guatemala and a part of Salvador. The Mayan
      peoples are dark, short, and brachycephallic, and at the
      time of the discovery had attained a higher grade of
      culture than any other American people. They cultivated a
      variety of crops, were expert in the manufacture and
      dyeing of cotton fabrics, used cacao as a medium of
      exchange, and were workers of gold, silver, and copper.
      Their architecture comprised elaborately carved temples
      and places, and they possessed a superior calendar, and a
      developed system of hieroglyphic writing, with records
      said to go back to about 700 a. d.

   2. Of or pertaining to the Mayas.

Source : WordNet®

Mayan
     n 1: a member of an American Indian people of Yucatan and Belize
          and Guatemala who had a culture (which reached its peak
          between AD 300 and 900) characterized by outstanding
          architecture and pottery and astronomy; "Mayans had a
          system of writing and an accurate calendar" [syn: {Maya}]
     2: a family of American Indian languages spoken by Mayan
        peoples [syn: {Maya}, {Mayan language}]