"troy pound" meaning in English

{
  "forms": [
    {
      "form": "troy pounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "troy pound (plural troy pounds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "name": "English entries with language name categories using raw markup",
          "parents": [
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            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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        }
      ],
      "glosses": [
        "A unit of weight, rarely used except in the trade of precious metals, equal to 5760 troy grains, 12 troy ounces, or 373.2417 grams."
      ],
      "id": "en-troy_pound-en-noun-oxd7tvCg",
      "links": [
        [
          "unit",
          "unit"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "precious metal",
          "precious metal"
        ],
        [
          "troy grain",
          "troy grain"
        ],
        [
          "troy ounces",
          "troy ounce"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "unit",
          "word": "troy-naula"
        }
      ]
    }
  ],
  "word": "troy pound"
}

{
  "forms": [
    {
      "form": "troy pounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "troy pound (plural troy pounds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from toponyms",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "A unit of weight, rarely used except in the trade of precious metals, equal to 5760 troy grains, 12 troy ounces, or 373.2417 grams."
      ],
      "links": [
        [
          "unit",
          "unit"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "precious metal",
          "precious metal"
        ],
        [
          "troy grain",
          "troy grain"
        ],
        [
          "troy ounces",
          "troy ounce"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "unit",
      "word": "troy-naula"
    }
  ],
  "word": "troy pound"
}