obstruction
US /əbˈstrʌk.ʃən/
UK /əbˈstrʌk.ʃən/

1.
the action of obstructing or the state of being obstructed
:
•
The fallen tree caused an obstruction on the road.
•
There was an obstruction in the pipe, preventing water flow.
the action of obstructing or the state of being obstructed