To melt a metal, especially so that it can be remade into something else. (verb)
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Use "melt down" in a sentence
"Christian ships in the mouth of the harbor had flanked and retarded this naval attack.] 63 Chalcondyles most absurdly supposes, that Constantinople was sacked by the Asiatics in revenge for the ancient calamities of Troy; and the grammarians of the xvth century are happy to melt down the uncouth appellation of Turks into the more classical name of Teucri.]"