Definition of 'obstacle'

Noun

1. something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination 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"
      Synonyms: obstruction
2. an obstruction that stands in the way (and must be removed or surmounted or circumvented)

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