Meaning

noun a building or group of buildings used to house military personnel

verb lodge in barracks

verb spur on or encourage especially by cheers and shouts

originBorrowed from French baraque, from Spanish barraca or Catalan barraca, which is of uncertain origin. It is probably either a diminutive of Vulgar Latin *barra (“bar”), of unclear origin, or a diminutive of Vulgar Latin *barrum (“clay, mud”) from Celtiberian or Paleo-Hispanic.

Etymology from Wiktionary, CC BY-SA 3.0