"vitamin K2" meaning in English

{
  "forms": [
    {
      "form": "vitamin K₂",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "vitamin K₂"
      },
      "expansion": "vitamin K₂ (uncountable)",
      "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"
        },
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          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "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"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Vitamins",
          "orig": "en:Vitamins",
          "parents": [
            "Biomolecules",
            "Biochemistry",
            "Body parts",
            "Organic compounds",
            "Biology",
            "Chemistry",
            "Body",
            "Anatomy",
            "Matter",
            "Sciences",
            "Human",
            "Medicine",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "menaquinone"
      ],
      "id": "en-vitamin_K2-en-noun-VvXAncgg",
      "links": [
        [
          "menaquinone",
          "menaquinone"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "vitamin K2"
}

{
  "forms": [
    {
      "form": "vitamin K₂",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "vitamin K₂"
      },
      "expansion": "vitamin K₂ (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms spelled with numbers",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Vitamins"
      ],
      "glosses": [
        "menaquinone"
      ],
      "links": [
        [
          "menaquinone",
          "menaquinone"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "vitamin K2"
}