Obstruction

The act of obstructing, or state of being obstructed.

That which obstructs or impedes; an obstacle; an impediment; a hindrance.

The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death.

any structure that makes progress difficult

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 physical condition of blocking or filling a passage with an obstruction