THESAURUS
bar, barricade, barrier, blind alley, blind gut, block, blockade, blockage, bottleneck, cecum, choking, choking off, clog, congestion, constipation, costiveness, cul-de-sac, dead end, embolism, embolus, fence, gorge, impasse, impediment, infarct, infarction, jam, obstacle, obstipation, obstruction, roadblock, sealing off, stop, stoppage, strangulation, wall
