A historical English coin worth half a farthing; a very small monetary unit worth one-eighth of a penny.
From demi- (half) + farthing (an old English coin worth one quarter penny). A monetary term from medieval and early modern English currency systems.
A demifarthing was so tiny it could barely buy anything—imagine money so small it was nearly worthless. These coins actually existed and show how currency systems tried to handle poverty and small transactions before modern denominations.
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