mulcher / multure [ˈmʌlʧ(j)ʊr]
mulcher – n. – a machine which reduces plant material, etc., to the consistency of mulch; esp. one that shreds plant clippings, etc., for use as mulch
multure – n. – 1. a fee consisting of a proportion of the grain carried or of the flour made, paid to the proprietor or tenant of a mill, usually in return for grinding grain; also, the right to exact this fee; 2. a fine; 3. also used allusively