- obstruction, blockage - the state or condition of being obstructed
--1 is a kind of physiological state, physiological condition
--1 has particulars: intestinal obstruction, ileus; tamponade, tamponageDerived form: verb block2 - blockage, 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"
--2 is a kind of obstruction, obstructor, obstructer, impediment, impedimenta
--2 has particulars:breechblock, breech closer; plug, stopper, stopple; vapor lock, vapour lock Derived form: verb block9 - blockage, closure, occlusion - the act of blocking
--3 is a kind of obstruction
--3 has particulars: implosionDerived forms: verb block3, verb block2, verb block7, verb block1, verb block12