to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
A barrier constructed across a road, especially as a military defence
An obstacle, barrier, or bulwark.
A place of confrontation.
To remove an impediment that obstructs the passage of (someone or something).
To remove a prohibition.
To unlock or unbolt a door that had been locked or bolted with a bar.