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 render disjoint; to remove a connection, linkage, or intersection.
To break the natural order and relations of; to make incoherent.
Of two or more sets, having no members in common; having an intersection equal to the empty set.
Not smooth or continuous; disjointed.