bar·ri·cade 
(bărĭ-kād′, băr′ĭ-kād)
(bărĭ-kād′, băr′ĭ-kād)n.
1.
a. A usually improvised structure set up, as across a route of access, to obstruct the passage of an enemy or opponent. See Synonyms at bulwark.
b. A usually temporary structure set up to restrict or control the movement of people or conveyances: stood behind the barricades watching the parade.
2. Something that serves as an obstacle; a barrier: "One of those wild minds who saw bridges where others saw barricades" (Patricia Monaghan).
tr.v. bar·ri·cad·ed, bar·ri·cad·ing, bar·ri·cades
1. To close off or block with a barricade.
2. To shut (oneself) in by means of a barricade, as for protection or privacy.
[French, from barrique, barrel, from Old Provençal barrica, from Vulgar Latin *barrīca; see EMBARGO.]
barri·cad′er n.