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 shut a building or a business for a period of time.
To become less 'open' or communicative, to shrink back.
To heal a cut or other wound
To move people closer together.