#1 blockage n. [obstruction] the physical condition of blocking or filling a passage with an obstruction. wn
#2 blockage n. [block, closure, occlusion, stop, stoppage] an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe". wn
#3 blockage n. [closure, occlusion] the act of blocking. wn
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