brakearm
nounUK /ˈbreɪkɑːm/
US /ˈbreɪkɑːrm/
A brakearm is a long metal bar that helps a train slow down and stop.
The train's brakearm swung down and pressed against the wheel to stop it.
OTHER MEANINGS
2. A lever on a machine that is pulled to stop it from moving.
He pulled the brakearm on the old press to halt the machine.
3. A part of a bicycle that holds the brake pad against the wheel.
The brakearm on my bike was bent, so the back wheel kept rubbing.
4. A person's arm used to signal a stop, as in a game or race.
The referee raised his brakearm to end the race.