Source : Webster's Revised Unabridged Dictionary (1913)

Barrio \Bar"ri*o\, n.; pl. {Barrios}. [Sp.]
   In Spain and countries colonized by Spain, a village, ward,
   or district outside a town or city to whose jurisdiction it
   belongs.

Source : WordNet®

barrio
     n 1: a Spanish-speaking quarter in a town or city (especially in
          the United States)
     2: an urban area in a Spanish-speaking country