A barrier constructed across a road, especially as a military defence
An obstacle, barrier, or bulwark.
A place of confrontation.
to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
To loosen or undo (something that entangles, fastens, holds, or interlocks).
To free (someone or something) from a constraint; (figuratively) to release (something which has been suppressed, such as emotions or objectionable things).
To relax or slacken (something that clasps or grips, such as the arms or hands).
To become loose or come off.
To free from a constraint.