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
A safe-conduct or passport, especially in time of war.
Something that serves as a guard or protection; a defense.
One who, or that which, defends or protects; defence; protection.
To escort safely.
To implement safeguarding.
To protect, to keep safe.