A bound notebook or ledger; historically, a document listing complaints or grievances (as in cahiers de doléances).
From French 'cahier', meaning notebook or booklet, from 'cahierne' or Latin 'quaternus' (a gathering of four sheets). Famous in French history from the 1789 revolutionary grievance documents.
During the French Revolution, cahiers de doléances (grievance notebooks) let ordinary people write down their complaints to the king—it was one of the first times masses of people had a voice in government.
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