obstruction

any structure that makes progress difficult

the physical condition of blocking or filling a passage with an obstruction

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"

the act of obstructing; "obstruction of justice"

getting in someone's way