A place of confrontation.
A barrier constructed across a road, especially as a military defence
An obstacle, barrier, or bulwark.
to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
Violent turmoil.
An uncontrolled fit, as of laughter; a paroxysm.
An intense, paroxysmal, involuntary muscular contraction.