blockage

1. (uncountable, countable) The state or condition of being blocked.Examples: "Only when one has seen a Control Office at first-hand does one realise the vast amount of unsparing but largely unsung work that is behind the eventual publication, perhaps, of a paragraph in this journal's "Motive Power Miscellany" recording the appearance, within hours of the complete blockage of a main line, of many of its trains, passenger and freight, on routes quite foreign to them; and of effective emergency services either side of the disaster area."countableuncountable

2. (countable) The thing that is the cause of such a state, blocking a passage.Examples: "There was a blockage in the sewer, so we called out the plumber."countable

3. (biology, medicine) Occlusion of a lumen (especially that of a blood vessel or intestine), or the thing that is causing it; as:Examples: "Blockage of circulation quickly leads to ischemia."; "In selected cases, endovascular thrombectomy can quickly remove a blockage that pharmaceutical thrombolysis can't budge."Synonyms: thrombosis, thromboembolism, or embolismcountableuncountable

4. (biology, medicine) Occlusion of a lumen (especially that of a blood vessel or intestine), or the thing that is causing it; as:Synonyms: constipationcountableuncountable