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"行く手をふさいでいる重要でないもので、回避するなり乗り越えるなりしなくてはならない障礙
例:The filibuster was a major obstruction to the success of their plan. 彼らの計画を成功させるのに、議事妨害が主な障害であった。
getting in someone's way誰かの邪魔をすること阻止
any structure that makes progress difficult進むことを困難にさせるもの障害
the act of obstructing; "obstruction of justice"妨害する行為差支え