Original: Stamp mill , a specialized machine for reducing ore to powder for further processing or for fracturing other materials a manual typewriter Mill ( currency ) , a denomination used by some currencies , the equivalent of a tenth of a cent/penny , or a thousandth of the currency unit .
Simplified: Stamp mill , a specialized machine for reducing ore to powder for further processing or for fracturing other materials Mill ( currency ) , a tenth of a cent/penny The standard author abbreviation Mill .