the world > food and drink > food > food manufacture and preparation > preparation of grain > [noun] > machine for cleaning grain (4)
a machine for cleaning corn.
a machine for ‘dusting’ or clearing away flour from bran.
Something that dismembrates or disintegrates; spec. an apparatus for separating flour from bran, after crushing in a roller mill.
A smutting-machine for cleaning grain. Hence smutter room.