/mil"ing/ , n.
1. an act or instance of subjecting something to the operation of a mill.
2. an act or process of producing plane or shaped surfaces with a milling machine.
3. Coining.
a. an act or process of making a raised edge on a coin or the like.
b. an act or process of making narrow, radial grooves on such a raised edge.
c. a number of grooves so made.
4. Slang. a beating or thrashing.
[ 1425-75; late ME. See MILL 1 , -ING 1 ]