[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; "His brother blocked him at every turn" Synonyms:obstruct, block, hinder, stymie, stymy, embarrass
[verb] render unsuitable for passage; "block the way"; "barricade the streets"; "stop the busy road" Synonyms:barricade, block, stop, block off, block up, bar
