A man working in a machine shop.
machine shop 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.
a workshop, factory, or part of a factory for making or repairing machines or machine parts
machine shop definition by American Heritage Dictionary
A workshop where power-driven tools are used for making, finishing, or repairing machines or machine parts.