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Meaning of barrier

bar•ri•er

Pronunciation: (bar'ē-ur), [key]
— n.
  1. anything built or serving to bar passage, as a railing, fence, or the like: People may pass through the barrier only when their train is announced.
  2. any natural bar or obstacle: a mountain barrier.
  3. anything that restrains or obstructs progress, access, etc.: a trade barrier.
  4. a limit or boundary of any kind: the barriers of caste.
  5. an antarctic ice shelf or ice front.
  6. See
  7. the palisade or railing surrounding the ground where tourneys and jousts were carried on.
  8. a fortress or stockade.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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