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 stop, stall, or disconnect suddenly.
To eject, dismiss, expel, or forcefully remove (someone or something).
To perform a kickout.