3. (Science: chemistry) To crush; to pulverize; specifically, to crush by the blow of a heavy stamp, as ore in a mill. I took your sin, the calf which ye had made, and burnt it with fire, and stamped it, and ground it very small. (Deut. Ix. 21)
Origin: OE. Stampen; akin to L 1000 G. & D. Stampen, G. Stampfen, OHG. Stanpfn, Dan. Stampe, Sw. Stampa, Icel. Stappa, G. Stampf a pestle and E. Step. See Step, and cf. Stampede.
5. [F. Estampe, of german origin. See Stamp] A picture cut in wood or metal, or made by impression; a cut; a plate. At Venice they put out very curious stamps of the several edifices which are most famous for their beauty and magnificence. (Addison)
7. Hence, a stamped or printed device, 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 receipt stamp, etc.
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)
13. Money, especially. Paper money. Stamp act, an act of the British Parliament  imposing a duty on all paper, vellum, and parchment used in the American colonies, and declaring all writings on unstamped materials to be null an void. Stamp collector, an officer who receives or collects stamp duties; one who collects postage or other stamps. 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. 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.
(Science: chemical) Stamp mill, 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. Stamp office, an office for the issue of stamps and the reception of stamp duties.