What is "stamp mill"

Stamp \Stamp\, n.

1. The act of stamping, as with the foot.

2. The which stamps; any instrument for making impressions on other bodies, as a die.

   'T is gold so pure It can not bear the stamp without alloy.
   --Dryden.

3. The mark made by stamping; a mark imprinted; an impression.

   That sacred name gives ornament and grace, And, like his stamp, makes basest metals pass.
   --Dryden.

4. That which is marked; a thing stamped.

   Hanging a golden stamp about their necks.
   --Shak.

5. [F. estampe, of German origin. See Stamp, v. t.] A picture cut in wood or metal, or made by impression; a cut; a plate. [Obs.]

   At Venice they put out very curious stamps of the several edifices which are most famous for their beauty and magnificence.
   --Addison.

6. An official mark set upon things chargeable with a duty or tax to government, as evidence that the duty or tax is paid; as, the stamp on a bill of exchange.

7. Hence: A stamped or printed device, usually paper, issued by the government at a fixed price, and required by law to be affixed to, or stamped on, certain papers, as evidence that the government dues are paid; as, a postage stamp; a tax stamp; a receipt stamp, etc.

8. An instrument for cutting out, or shaping, materials, as paper, leather, etc., by a downward pressure.

9. A character or reputation, good or bad, fixed on anything as if by an imprinted mark; current value; authority; as, these persons have the stamp of dishonesty; the Scriptures bear the stamp of a divine origin.

   Of the same stamp is that which is obtruded on us, that an adamant suspends the attraction of the loadstone.
   --Sir T. Browne.

10. Make; cast; form; character; as, a man of the same stamp, or of a different stamp.

    A soldier of this season's stamp.
    --Shak.

11. A kind of heavy hammer, or pestle, raised by water or steam power, for beating ores to powder; anything like a pestle, used for pounding or beating.

12. A half-penny. [Obs.]
    --Beau. & Fl.

13. pl. Money, esp. paper money. [Slang, U.S.] Stamp act, an act of the British Parliament [1765] imposing a duty on all paper, vellum, and parchment used in the American colonies, and declaring all writings on unstamped materials to be null and void. Stamp collector,

    1. an officer who receives or collects stamp duties.

    2. one who collects postage or other stamps, as an avocation or for investment; a philatelist.

       Stamp duty, a duty, or tax, imposed on paper and parchment used for certain writings, as deeds, conveyances, etc., the evidence of the payment of the duty or tax being a stamp. [Eng.]

       Stamp hammer, a hammer, worked by power, which rises and falls vertically, like a stamp in a stamp mill.

       Stamp head, a heavy mass of metal, forming the head or lower end of a bar, which is lifted and let fall, in a stamp mill.

       Stamp mill (Mining), a mill in which ore is crushed with stamps; also, a machine for stamping ore.

       Stamp note, a stamped certificate from a customhouse officer, which allows goods to be received by the captain of a ship as freight. [Eng.]

       Stamp office, an office for the issue of stamps and the reception of stamp duties.

Mill \Mill\, n. [OE. mille, melle, mulle, milne, AS. myln, mylen; akin to D. molen, G. m["u]hle, OHG. mul[=i], mul[=i]n, Icel. mylna; all prob. from L. molina, fr. mola millstone; prop., that which grinds, akin to molere to grind, Goth. malan, G. mahlen, and to E. meal. [root]108. See Meal flour, and cf. Moline.]

1. A machine for grinding or comminuting any substance, as grain, by rubbing and crushing it between two hard, rough, or indented surfaces; as, a gristmill, a coffee mill; a bone mill.

2. A machine used for expelling the juice, sap, etc., from vegetable tissues by pressure, or by pressure in combination with a grinding, or cutting process; as, a cider mill; a cane mill.

3. A machine for grinding and polishing; as, a lapidary mill.

4. A common name for various machines which produce a manufactured product, or change the form of a raw material by the continuous repetition of some simple action; as, a sawmill; a stamping mill, etc.

5. A building or collection of buildings with machinery by which the processes of manufacturing are carried on; as, a cotton mill; a powder mill; a rolling mill.

6. (Die Sinking) A hardened steel roller having a design in relief, used for imprinting a reversed copy of the design in a softer metal, as copper.

7. (Mining)

   1. An excavation in rock, transverse to the workings, from which material for filling is obtained.

   2. A passage underground through which ore is shot.

8. A milling cutter. See Illust. under Milling.

9. A pugilistic encounter. [Cant]
   --R. D. Blackmore.

10. Short for Treadmill.

11. The raised or ridged edge or surface made in milling anything, as a coin or screw.

12. A building or complex of buildings containing a mill[1] or other machinery to grind grains into flour.

    Edge mill, Flint mill, etc. See under Edge, Flint, etc.

    Mill bar (Iron Works), a rough bar rolled or drawn directly from a bloom or puddle bar for conversion into merchant iron in the mill.

    Mill cinder, slag from a puddling furnace.

    Mill head, the head of water employed to turn the wheel of a mill.

    Mill pick, a pick for dressing millstones.

    Mill pond, a pond that supplies the water for a mill.

    Mill race, the canal in which water is conveyed to a mill wheel, or the current of water which drives the wheel.

    Mill tail, the water which flows from a mill wheel after turning it, or the channel in which the water flows.

    Mill tooth, a grinder or molar tooth.

    Mill wheel, the water wheel that drives the machinery of a mill.

    Gin mill, a tavern; a bar; a saloon; especially, a cheap or seedy establishment that serves liquor by the drink.

    Roller mill, a mill in which flour or meal is made by crushing grain between rollers.

    Stamp mill (Mining), a mill in which ore is crushed by stamps.

    To go through the mill, to experience the suffering or discipline necessary to bring one to a certain degree of knowledge or skill, or to a certain mental state.

n. type of mill machine that crushes material by pounding rather than grinding, either for further processing or for extraction of metallic ores

n. a mill in which ore is crushed with stamps [syn: stamping mill]

A stamp mill (or stamp battery or stamping mill) is a type of mill machine that crushes material by pounding rather than grinding, either for further processing or for extraction of metallic ores. Breaking material down is a type of unit operation.