Each of a number of rotating iron bars or tubes, typically bearing teeth or blades, forming part of a mechanism for stirring or raking material which is being roasted or incinerated.
Origin
Late 19th century.
Definition of rabble arm in US English:
rabble arm
noun
Each of a number of rotating iron bars or tubes, typically bearing teeth or blades, forming part of a mechanism for stirring or raking material which is being roasted or incinerated.