A pinch point is a place or point where congestion occurs or is likely to occur, especially on a road.
Also known as: roadblock or bottle neck
In regards to machinery a pinch point can also refer to a point between multiple moving or stationary parts where ones body part or clothing can become stuck or caught, often leading to serious injury.
The Prepper Life
In Prepper terms, creating a pinch point is a way to create congestion on the road or as a barricade point.