1. obstruction, blockage, physical condition, physiological state, physiological condition

usage: the physical condition of blocking or filling a passage with an obstruction

2. blockage, block, closure, occlusion, stop, stoppage, obstruction, obstructor, obstructer, impediment, impedimenta

usage: an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe"

3. blockage, closure, occlusion, obstruction

usage: the act of blocking

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See also: blockage (Dictionary)