Run of the Mill

The Definition

Something that is ordinary, average, or unexceptional. It describes an item or situation that is standard-issue and lacks any special or distinguishing features.

The Deep Dive

While modern users might think of a "mill" as a generic factory, this phrase specifically originates from the early days of the textile and grist mills of the Industrial Revolution. It describes the raw, uninspected output of a production cycle before any quality control has taken place.

In a textile mill, the "run" was a specific batch of fabric produced during a single continuous operation of the looms.

  • The Grading Process: Once a "run" was completed, the fabric was traditionally sorted into grades. The finest pieces were set aside for luxury garments, while pieces with snags or uneven dyes were sold as "seconds."

  • The "Run" of the Mill: To buy fabric straight from the "run of the mill" meant you were taking the cloth exactly as it came off the machine—unsorted, unselected, and utterly average. It wasn't necessarily bad; it just wasn't "special."

The phrase transitioned from the garment trade to general English in the late 19th century. By the 1920's, it was being used to describe everything from a "run of the mill" politician to a "run of the mill" Tuesday—implying that the subject is exactly what you’d expect from the standard machinery of life.

Fast Facts

  • The Grist Connection: A similar concept existed in flour mills. "Run of the mill" flour was the unsifted, basic product containing both the fine flour and the coarser middlings.

  • The "Mine" Variation: A less common but related phrase is "run of the mine," used in the coal industry to describe ore that hasn't been sized or cleaned.

  • The Shift: In its earliest usage (c. 1880), the phrase was often "run-of-mine" or "run-of-kiln," but the "mill" version eventually won the linguistic popularity contest.

References

  • Ammer, C. (2013). The Dictionary of Clichés. Skyhorse Publishing.

  • Landes, D. S. (2003). The Unbound Prometheus: Technological Change and Industrial Development in Western Europe from 1750 to the Present. Cambridge University Press.

  • The Oxford English Dictionary. (2026). Run (n.1). Oxford University Press.

  • Montgomery, F. (1984). Textiles in America, 1650-1870. W. W. Norton & Company.