a barrier (usually thrown up hastily) to impede the advance of an enemy
a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
render unsuitable for passage
block off with barricades
prevent access to by barricading
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.