"骨髄" meaning in Japanese

{
  "forms": [
    {
      "form": "骨髄",
      "ruby": [
        [
          "骨",
          "こつ"
        ],
        [
          "髄",
          "ずい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kotsuzui",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "こつずい"
      },
      "expansion": "骨(こつ)髄(ずい) • (kotsuzui)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "42 25 33",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "88 6 6",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "33 33 33",
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "88 6 6",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "70 15 15",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "83 8 8",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "bone marrow"
      ],
      "id": "en-骨髄-ja-noun--poR6J0C",
      "links": [
        [
          "bone marrow",
          "bone marrow"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "33 33 33",
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "one's innermost depths, the bottom of one's heart"
      ],
      "id": "en-骨髄-ja-noun-oj-Boq5L"
    },
    {
      "categories": [
        {
          "_dis": "33 33 33",
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "the most important point"
      ],
      "id": "en-骨髄-ja-noun-lq4rrTms"
    }
  ],
  "sounds": [
    {
      "other": "こつずい"
    },
    {
      "ipa": "[ko̞t͡sɨzɨi]"
    }
  ],
  "word": "骨髄"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms spelled with secondary school kanji",
    "Japanese terms spelled with sixth grade kanji",
    "Japanese terms with 2 kanji",
    "Japanese terms with IPA pronunciation",
    "Japanese terms with redundant sortkeys",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "骨髄",
      "ruby": [
        [
          "骨",
          "こつ"
        ],
        [
          "髄",
          "ずい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kotsuzui",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "こつずい"
      },
      "expansion": "骨(こつ)髄(ずい) • (kotsuzui)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "bone marrow"
      ],
      "links": [
        [
          "bone marrow",
          "bone marrow"
        ]
      ]
    },
    {
      "glosses": [
        "one's innermost depths, the bottom of one's heart"
      ]
    },
    {
      "glosses": [
        "the most important point"
      ]
    }
  ],
  "sounds": [
    {
      "other": "こつずい"
    },
    {
      "ipa": "[ko̞t͡sɨzɨi]"
    }
  ],
  "word": "骨髄"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "骨髄"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "骨髄",
  "trace": ""
}