denier

For the denier as a measure of the fineness of yarn, see yarn number.

In France, 15th – 19th century, a unit of mass, about 1.274 grams, By law between 1800 and 1812, = 1 gram.

From the Latin denarius, a Roman coin and monetary unit. Up to the end of the 18th century, the denier was a monetary unit in France, a coin (from which the English penny was derived); 240 deniers made a (monetary) livre.