"metric pound" meaning in English

{
  "etymology_text": "This is the closest metric unit to the imperial pound (of approximately 454 grams).",
  "forms": [
    {
      "form": "metric pounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metric pound (plural metric 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"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Half a kilogram, or 500 grams."
      ],
      "id": "en-metric_pound-en-noun-Bxqog5tw",
      "links": [
        [
          "kilogram",
          "kilogram"
        ],
        [
          "gram",
          "gram"
        ]
      ],
      "raw_glosses": [
        "(informal) Half a kilogram, or 500 grams."
      ],
      "related": [
        {
          "english": "mass",
          "word": "w:Pound"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "metric pound"
}

{
  "etymology_text": "This is the closest metric unit to the imperial pound (of approximately 454 grams).",
  "forms": [
    {
      "form": "metric pounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metric pound (plural metric pounds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "english": "mass",
      "word": "w:Pound"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "Half a kilogram, or 500 grams."
      ],
      "links": [
        [
          "kilogram",
          "kilogram"
        ],
        [
          "gram",
          "gram"
        ]
      ],
      "raw_glosses": [
        "(informal) Half a kilogram, or 500 grams."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "metric pound"
}