A mill is a factory or plant, especially one that's equipped for grinding grain into flour. The facility is a mill, and the machine that does the actual grinding is also called a mill.

When a mill crushes and grinds grain like wheat or corn, you can say it mills flour. Other kinds of mills might mill powder or coffee — and still other mills don't actually grind anything; instead, they manufacture things like steel or paper. If someone "mills around," they wander or move about in a confused way: "The crowd mills around during the concert's intermission." This sense of mill was originally used to describe cattle.

Primary Meanings of mill

a plant consisting of one or more buildings with facilities for manufacturing
grind with a mill
move about in a confused manner
Full Definitions of mill

n a plant consisting of one or more buildings with facilities for manufacturing

factory, manufactory, manufacturing plant
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assembly plant
a factory where manufactured parts are assembled into a finished product
auto factory, automobile factory, car factory
a factory where automobiles are manufactured
a factory where food is canned
chemical plant
an industrial plant where chemicals are produced
foundry, metalworks
factory where metal castings are produced
lumbermill, sawmill
a mill for dressing logs and lumber
paper mill
a mill where paper is manufactured
stamp mill, stamping mill
a mill in which ore is crushed with stamps
steel factory, steel mill, steel plant, steelworks
a factory where steel is made
factory where workers do piecework for poor pay and are prevented from forming unions; common in the clothing industry
textile mill
a factory for making textiles
armory, armoury, arsenal
a place where arms are manufactured
battery, stamp battery
a series of stamps operated in one mortar for crushing ores
bell foundry
a foundry where bells are cast
cotton mill
a textile mill for making cotton textiles
iron foundry
a foundry where cast iron is produced
an assembly plant in Mexico (near the United States border); parts are shipped into Mexico and the finished product is shipped back across the border
quartz battery, quartz mill
a stamp mill for stamping quartz
rolling mill
steel mill where metal is rolled into sheets and bars
Type of:
industrial plant, plant, works
buildings for carrying on industrial labor

n machinery that processes materials by grinding or crushing

grinder, milling machinery
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cider mill
mill that extracts juice from apples to make apple cider
coffee grinder, coffee mill
a mill that grinds roasted coffee beans
flour mill
a mill for grinding grain into flour
a mill for grinding grain (especially the customer's own grain)
meat grinder
a mill for grinding meat
pepper grinder, pepper mill
a mill for grinding pepper
a primitive stone mill for grinding corn by hand
a mill for grinding spices
tread-wheel, treadmill, treadwheel
a mill that is powered by men or animals walking on a circular belt or climbing steps
water mill
a mill powered by a water wheel
a mill that is powered by the wind
Type of:
machines or machine systems collectively

n the act of grinding to a powder or dust

grind, pulverisation, pulverization
Type of:
compaction, crunch, crush
the act of crushing

v grind with a mill

mill grain”
Type of:
bray, comminute, crunch, grind, mash
reduce to small pieces or particles by pounding or abrading

v roll out (metal) with a rolling machine

Type of:
roll, roll out
flatten or spread with a roller

v produce a ridge around the edge of

mill a coin”
Type of:
make a groove in, or provide with a groove

v move about in a confused manner

mill about, mill around
Type of:
move so as to change position, perform a nontranslational motion

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