definition of
blockage

[1] #1 blockage n. [obstruction] the physical condition of blocking or filling a passage with an obstruction. wn

[2] #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] #3 blockage n. [closure, occlusion] the act of blocking. wn