roadblock

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Advanced English dictionary

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+ noun
1 a barrier put across the road by the police or army so that they can stop and search vehicles: The police set up a roadblock on the bridge.
2 (AmE) something that stops a plan from going ahead: The project faces legal roadblocks.

Collocation dictionary

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ADJ.

army, police

VERB + ROADBLOCK

erect, set up

Police have set up a roadblock on the road to London.

| remove

PREP.

at a/the ~

They were stopped at a roadblock leaving the city.

| through a/the ~

The truck drove through the roadblock at 100 mph.