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barrier
 
Noun barrier has 3 senses
  1. barrier - a structure or object that impedes free movement
    --1 is a kind of     obstruction, obstructor, obstructer, impediment, impedimenta
    --1 has particulars:
     bannister, banister, balustrade, balusters, handrail; barricade; breakwater, groin, groyne, mole, bulwark, seawall, jetty; bulwarks, bulwark; crash barrier; dam, dike, dyke, levee; fence, fencing; fender, wing; grate, grating; hurdle; movable barrier; railing, rail; revetment; roadblock, barricade; starting gate, starting stalls
  2. barrier, roadblock - any condition that makes it difficult to make progress or to achieve an objective; "intolerance is a barrier to understanding"
    --2 is a kind of obstacle, obstruction
    --2 has particulars: ideological barrier; language barrier
  3. barrier - anything serving to maintain separation by obstructing vision or access
    --3 is a kind of     mechanism
    --3 has particulars: bar; blood-brain barrier; curtain
barricaded barricades barricading barricado barricate barrie barriees barrier-breaking barrier barrier island barrier reef barrier strip barriers barriers in computing barries barring barrington

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