The Collaborative International Dictionary of English v.0.48:

Pueblo \Pueb"lo\, n. [Sp., a village, L. populus people. See
   People.]
   A communistic building erected by certain Indian tribes of
   Arizona and New Mexico. It is often of large size and several
   stories high, and is usually built either of stone or adobe.
   The term is also applied to any Indian village in the same
   region.
   [1913 Webster]

   Pueblo Indians (Ethnol.), any tribe or community of Indians
      living in pueblos. The principal Pueblo tribes are the
      Moqui, the Zu[~n]i, the Keran, and the Tewan.
      [1913 Webster]