"gun metal" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "gun",
        "3": "metal"
      },
      "expansion": "gun + metal",
      "name": "com"
    }
  ],
  "etymology_text": "From gun + metal.",
  "forms": [
    {
      "form": "gun metals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "gun metal (countable and uncountable, plural gun metals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "gunmetal"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1896, William T. King, “John A. Ives & Brother – 1864”, in History of the American Steam Fire-engine, [Boston, Mass.]: [Pinkham Press], →OCLC; reprinted Mineola, N.Y.: Dover Publications, 2001, →ISBN, page 92:",
          "text": "The pump [of the steam fire-engine], being at the forward end, was made of gun metal and was double acting, having eight brass suction-valves, four on each side, and four discharge valves, opening into the air vessels, to which a double discharge valve, having one opening on the inside and two on the outside, was attached for the purpose of using two lines of hose.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of gunmetal."
      ],
      "id": "en-gun_metal-en-noun-s1k3Ascu",
      "links": [
        [
          "gunmetal",
          "gunmetal#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "gun metal"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "gun",
        "3": "metal"
      },
      "expansion": "gun + metal",
      "name": "com"
    }
  ],
  "etymology_text": "From gun + metal.",
  "forms": [
    {
      "form": "gun metals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "gun metal (countable and uncountable, plural gun metals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "gunmetal"
        }
      ],
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1896, William T. King, “John A. Ives & Brother – 1864”, in History of the American Steam Fire-engine, [Boston, Mass.]: [Pinkham Press], →OCLC; reprinted Mineola, N.Y.: Dover Publications, 2001, →ISBN, page 92:",
          "text": "The pump [of the steam fire-engine], being at the forward end, was made of gun metal and was double acting, having eight brass suction-valves, four on each side, and four discharge valves, opening into the air vessels, to which a double discharge valve, having one opening on the inside and two on the outside, was attached for the purpose of using two lines of hose.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of gunmetal."
      ],
      "links": [
        [
          "gunmetal",
          "gunmetal#English"
        ]
      ],
      "tags": [
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        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "gun metal"
}