obstruction

obstruction (http://definr.com/obstruction)

     n 1: any structure that makes progress difficult [syn: obstructor,
           obstructer, impediment, impedimenta]
     2: the state or condition of being obstructed [syn: blockage]
     3: something immaterial that stands in the way and must be
        circumvented or surmounted: "lack of immagination 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" [syn: obstacle]
     4: the act of obstructing; "obstruction of justice"
     5: getting in someone's way