barricade

Meanings

1. A barrier constructed across a road, especially as a military defence
2. An obstacle, barrier, or bulwark.
3. A place of confrontation.
4. Line of people standing behind or closest to the barricade in the pit section of a live music concert.

1. To close or block a road etc., as, or using, a barricade.
2. To keep someone in (or out), using a blockade, especially ships in a port.

Etymology

The noun is borrowed from French barricade, or an assimilation of the earlier barricado to the French form. The verb is from the noun or French barricader.