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 obstruct or stop up, as a road; to stop the passage of a highway; to intercept on the road, as goods on the way to market.
To anticipate, to act foreseeingly.
To preclude or bar from happening, render impossible.
To prevent, delay or hinder something by taking precautionary or anticipatory measures; to avert.
To deprive (with of).
Something situated or placed in front.