stoppingarm
nounUK /ˈstɒpɪŋ ɑːm/
US /ˈstɑːpɪŋ ɑːrm/
A long bar that goes up and down to stop cars so people can cross safely.
The stopping arm came down and the cars waited while the children crossed the road.
OTHER MEANINGS
2. A movable pole at a toll booth that lifts to let a car pass.
The stopping arm lifted after Dad paid the toll.
3. A part of a machine that holds something in place until it is safe to move.
The stopping arm kept the roller coaster cars still at the station.
4. A long wooden or metal bar used to block a path or entrance.
They put a stopping arm across the driveway so no cars could park there.