n 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
n an obstruction that stands in the way (and must be removed or surmounted or circumvented)
Obstacle Arises for Fort Drum To Become Missile Defense Center There's a new obstacle to Fort Drum becoming a missile defense center. A high ranking military official says adding yet another site could come at too high a cost.
June 13, 2013 - WWNY - WNYF Watertown
Setting a course to help kids An obstacle course is being built by Boys and Girls Clubs of Cascade County volunteers for their first Redneck Run fundraiser, which will be held Aug. 17.
June 13, 2013 - Great Falls Tribune
Bobby Jindal in WDSU There is no excuse for the delay. We absolutely need to quicken the pace at which power is restored,said Gov. Bobby Jindal. "I cannot emphasize it enough, it is the No. 1 obstacle."
Shinzo Abe in Christian Science Monitor I decided a quick decision was necessary, and that a further delay would cause political confusion,Abe told a nationally televised news conference. "I find myself unable to keep my promises - I myself have become an obstacle to fulfilling...
Robert Gates in Orlando Sentinel I think that the principal obstacle has been resolving a lot of the legal issues associated with closing Guantanamo and what you do with the prisoners when they come back (to the United States),Gates said.