Mill (currency)

The mill is an abstract unit of US currency, equivalent to 1/1000 of a US Dollar. No coins were ever made in this denomination; the denomination is used sometimes in accounting. The term comes from the Latin mille, meaning 1,000.

The term was invented by the United States Congress in 1786, and was described as the "lowest money of accompt, of which 1000 shall be equal to the federal dollar". Coinage in this denomination was legislated at that time, but never carried out.