Barricade

A fortification, made in haste, of trees, earth, palisades, wagons, or anything that will obstruct the progress or attack of an enemy. It is usually an obstruction formed in streets to block an enemy's access.

Any bar, obstruction, or means of defense.

To fortify or close with a barricade or with barricades; to stop up, as a passage; to obstruct; as, the workmen barricaded the streets of Paris.

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

a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.