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 permanent military post.
The troops stationed at such a post.
Occupants.
A military unit, nominally headed by a colonel, equivalent to a USAF support wing, or an army regiment.
To convert into a military fort.
To occupy with troops.
To assign troops to a military post.