"珠玉" meaning in Japanese

{
  "forms": [
    {
      "form": "珠玉",
      "ruby": [
        [
          "珠",
          "しゅ"
        ],
        [
          "玉",
          "ぎょく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shugyoku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "syugyoku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "しゆぎよく",
      "roman": "syugyoku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しゅぎょく",
        "hhira": "しゆぎよく"
      },
      "expansion": "珠(しゅ)玉(ぎょく) • (shugyoku) ^(←しゆぎよく (syugyoku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "pearl and jade"
      ],
      "id": "en-珠玉-ja-noun-NSiPHD4G",
      "links": [
        [
          "pearl",
          "pearl"
        ],
        [
          "jade",
          "jade"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "38 62",
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "9 91",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "gem (thing of great value)"
      ],
      "id": "en-珠玉-ja-noun-qXbmFlqV",
      "links": [
        [
          "gem",
          "gem"
        ]
      ],
      "raw_glosses": [
        "(figurative) gem (thing of great value)"
      ],
      "tags": [
        "figuratively"
      ]
    }
  ],
  "sounds": [
    {
      "other": "しゅぎょく"
    },
    {
      "other": "しゅぎょく"
    },
    {
      "ipa": "[ɕɨɡʲo̞kɯ̟]"
    }
  ],
  "word": "珠玉"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant alt parameters",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms spelled with first grade kanji",
    "Japanese terms spelled with secondary school 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": "珠玉",
      "ruby": [
        [
          "珠",
          "しゅ"
        ],
        [
          "玉",
          "ぎょく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shugyoku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "syugyoku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "しゆぎよく",
      "roman": "syugyoku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しゅぎょく",
        "hhira": "しゆぎよく"
      },
      "expansion": "珠(しゅ)玉(ぎょく) • (shugyoku) ^(←しゆぎよく (syugyoku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "pearl and jade"
      ],
      "links": [
        [
          "pearl",
          "pearl"
        ],
        [
          "jade",
          "jade"
        ]
      ]
    },
    {
      "glosses": [
        "gem (thing of great value)"
      ],
      "links": [
        [
          "gem",
          "gem"
        ]
      ],
      "raw_glosses": [
        "(figurative) gem (thing of great value)"
      ],
      "tags": [
        "figuratively"
      ]
    }
  ],
  "sounds": [
    {
      "other": "しゅぎょく"
    },
    {
      "other": "しゅぎょく"
    },
    {
      "ipa": "[ɕɨɡʲo̞kɯ̟]"
    }
  ],
  "word": "珠玉"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "珠玉"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "珠玉",
  "trace": "started on line 2, detected on line 2"
}

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