1. A structure or object that impedes free movement 
2. Any condition that makes it difficult to make progress or to achieve an objective
   "intolerance is a barrier to understanding"
   - roadblock 
3. Anything serving to maintain separation by obstructing vision or access

Derived forms: barriers

Type of: impediment, impedimenta, mechanism, obstacle, obstructer, obstruction, obstructor

Encyclopedia: Barrier

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