Grain that has been ground into flour or meal, or the amount of grain brought to be ground at a mill.
From Old English 'grist,' derived from the root 'grind.' The term originally referred to a single milling operation and the grain processed in it.
The phrase 'grist for the mill' comes from the literal practice of bringing grain to millers—anything useful became metaphorically 'grist' for processing ideas or arguments.
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