What does the word obstacle mean?

Usage examples for obstacle

  1. Nevertheless there were seven of them, and that should be no obstacle. – Lorna Doone, A Romance of Exmoor by R. D. Blackmore
  2. For all that, he could not go home yet; the money was still an obstacle. – The Girl From Keller's Sadie's Conquest by Harold Bindloss
  3. When in movement it would never stop if some obstacle were not in its road. – The Moon-Voyage by Jules Verne