Crackup and Pinch bar

Pinch bar and crackup are semantically related. In some cases you can use "Pinch bar" instead a noun "Crackup".

Pinch bar noun - A lever with a pointed projection that serves as a fulcrum; used to roll heavy wheels.

Crackup and pinch bar are semantically related. Sometimes you can use "Crackup" instead a noun phrase "Pinch bar".