Where does “gun metal” come from?

gun metal (English) comes from English metal, from French métal, from German metall, from Italian metallo, from Spanish metal, from Old Spanish metal, from Old French métal, from Latin metallum — to mine, quarry.

Ancestry of “gun metal”, step by step

gun metal traces back through two separate lines of ancestry.

via English metal

StepLanguageWordMeaning
1Englishmetal"Chemical elements or alloys, and the mines where...
2Frenchmétalmetal
3Germanmetallmetal
4Italianmetallometal
5Spanishmetalmetal
6Old Spanishmetalmetal
7Old Frenchmétalmetal material
8Latinmetallummetal; precious metals, especially gold or...
9Ancient GreekμέταλλονA mine, quarry, or salt pit; metal
10Ancient Greekμέταλλευεινto mine, quarry

via English gun

StepLanguageWordMeaning
1EnglishgunA device for projecting a hard object very...
2Middle EnglishgunneA trebuchet or similar kind of pellet-firing...
3Old NorseGunnhildr
4Old NorseGunnrbattle, war
5Old Norseguðrbattle, war
6Proto-Germanicgunþizbattle
7Proto-Indo-Europeangʷʰéntisstriking, killing
8Proto-Indo-Europeangʷʰen-to strike, slay, kill
9Proto-Indo-Europeanbʰon-
Every word from Ancient Greek μέταλλευειν