Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun roadblock

2 senses of roadblock

Sense 1
barrier, roadblock -- (any condition that makes it difficult to make progress or to achieve an objective; "intolerance is a barrier to understanding")
       => obstacle, obstruction -- (something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan")

Sense 2
roadblock, 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.)
       => barrier -- (a structure or object that impedes free movement)