run-of-the-mill[run′əv t̸hə mil′]
run-of-the-mill definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
not special; ordinary; average
run-of-the-mill definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Not special or outstanding; average.
run-of-the-mill - Cultural Definition
The New Dictionary of Cultural Literacy Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Common, ordinary, average: “His performance in the game was neither exemplary nor disastrous; it was simply run of the mill.”
run-of-the-mill - Phrases/Idioms
Ordinary, average, as in There's nothing special about these singers—they're just run of the mill. This expression alludes to fabrics coming directly from a mill without having been sorted or inspected for quality. It has survived such similar phrases as run of the mine and run of the kiln, for the products of mines and kilns. [Late 1800s]