Synonyms for Barricade (same or very similar meaning)
WordNet sense 1 (a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.):
roadblockWordNet sense 2 (render unsuitable for passage):
bar, block, blockade, stop, block off, block upWordNet sense 3 (block off with barricades):
barricadoFrom the ODE community, based on WordNetadd/edit