1911 Encyclopædia Britannica/Barricade

BARRICADE, or Barricado (from the Span. barricada, from barrica, a cask, casks filled with earth having been early used to form barricades), an improvised fortification of earth, paving-stones, trees or any materials ready to hand, thrown up, especially across a street, to hinder the advance of an enemy; in the old wooden warships a fence or wooden rail, supported by stanchions and strengthened by various materials, extending across the quarter-deck as a protection during action.