blockade

(noun) a war measure that isolates some area of importance to the enemy. Synonyms: encirclement.

(noun) prevents access or progress.

(verb) hinder or prevent the progress or accomplishment of. Synonyms: obstruct, block, hinder, stymie, stymy, embarrass. Example: "His brother blocked him at every turn."

(verb) render unsuitable for passage. Synonyms: barricade, block, stop, block off, block up, bar. Examples: "Block the way." "Barricade the streets." "Stop the busy road."

(verb) obstruct access to. Synonyms: block off.

(verb) impose a blockade on. Synonyms: seal off.