Focus on the pronunciation of mill
/mɪl/ verb [T] PRODUCTION
› to cut metal or make it into a particular shape by using a special machine: mill sth into sth The steel is milled into sheets, plates, bars, wire, and tubing.
› to crush grain into flour or crush another substance into powder: The grain is still milled locally. → See also milling, paper mill, run-of-the-mill