any condition that makes it difficult to make progress or to achieve an objective
anything serving to maintain separation by obstructing vision or access
a structure or object that impedes free movement
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
a barrier (usually thrown up hastily) to impede the advance of an enemy
prevent access to by barricading
