Gristmill

The town had three lumber mills, four shingle mills, and a gristmill.

Near-synonyms: flourmill, feed mill

Next day after school, I drove over to the town hall and found out where Hay was building their dinky little shoebox of a house. It was out in the sticks, out past the old gristmill. I drove out there around dusk. The place was framed; the chimney was up. Overhead was a pockmarked moon.