Obstacle

[Sarah]

That which stands in the way, or opposes; anything that hindersprogress; a hindrance; an obstruction, physical or moral.If all obstacles were cut away. And that my path were even to thecrown. Shak.

[Sarah]

Any evil person or thing that is going to effect your chances of [scoring]

[Sarah]

obstacles are the people in your high school who are idiots and in the halls they are just in the way...
see obstacle course

[Lanell]

something that blocks you so that movement, going forward, or action is prevented or made more difficult:

[Dorothey Allen]

A thing that blocks ones way or prevents or hinders progress.