roadblock

A barricade or obstruction across a road set up to prevent the escape or passage, as of a fugitive or enemy troops.

An obstruction in a road, as fallen rocks or trees.

Something, such as a situation or condition, that prevents further progress toward an accomplishment.

Something that blocks or obstructs a road.

An obstacle or impediment.

To prevent, hinder.

any condition that makes it difficult to make progress or to achieve an objective

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