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  1. Obstacle Definition & Meaning - Merriam-Webster

  2. OBSTACLE | definition in the Cambridge English Dictionary

  3. OBSTACLE | English meaning - Cambridge Dictionary

  4. obstacle noun - Definition, pictures, pronunciation and usage ...

  5. Obstacle - definition of obstacle by The Free Dictionary

  6. OBSTACLE | definition in the Cambridge Learner’s Dictionary

  7. Obstacle - Definition, Meaning & Synonyms - Vocabulary.com

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