1836 G. Head 147 The smell of the rag-grinding process.
1898 4 Dec. 13/2 If the materials were submitted to the rag-grinding machine in their raw state, the result would be a kind of thread-like appearance.
1992 C. Giles & I. H. Goodall iii. 105/1 These sheds also housed..rag grinding, a common process in woollen mills in the Heavy Woollen area.