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Noun obstruction has 5 senses
  1. obstruction, obstructor, obstructer, impediment, impedimenta - any structure that makes progress difficult
    --1 is a kind of structure, construction
    --1 has particulars:
     bar; barrier; blockade; blockage, block, closure, occlusion, stop, stoppage; hindrance, hitch, preventive, preventative, encumbrance, incumbrance, interference; obstacle; tumbler
  2. obstruction, blockage - the state or condition of being obstructed
    --2 is a kind of physiological state, physiological condition
    --2 has particulars: intestinal obstruction, ileus; tamponade, tamponage
  3. obstacle, obstruction - something immaterial that stands in the way and must be circumvented or surmounted; "lack of immagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan"
    --3 is a kind of hindrance, deterrent, impediment, balk, baulk, check, handicap
    --3 has particulars:
     barrier, roadblock; hang-up, hitch, rub, snag; hurdle; stymie
  4. obstruction - the act of obstructing; "obstruction of justice"
    --4 is a kind of
    hindrance, interference
    --4 has particulars:
     blockage, closure, occlusion; stall, stalling; obstruction of justice
    Derived forms: verb obstruct1, verb obstruct2
  5. obstruction - getting in someone's way
    --5 is a kind of
    maneuver, manoeuvre, play
    --5 has particulars: blocking, block, interference; check
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