blockage in WordNet English dictionary

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