barricade in WordNet English dictionary

1. render unsuitable for passage
   "block the way"; "barricade the streets"; "stop the busy road"
   barricade  block  blockade  stop  block off  block up  bar 
   
2. block off with barricades
   barricade  barricado 
   
3. prevent access to by barricading
   "The street where the President lives is always barricaded"
   barricade 
   

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.
   roadblock  barricade 
   
2. a barrier (usually thrown up hastily) to impede the advance of an enemy
   "they stormed the barricade"
   barricade