"neutral clef" meaning in English

{
  "forms": [
    {
      "form": "neutral clefs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "neutral clef (plural neutral clefs)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Music",
          "orig": "en:Music",
          "parents": [
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A symbol used for pitchless instruments, such as some of those used for percussion instruments, for which each line can represent a specific percussion instrument within a set, such as in a drum set."
      ],
      "id": "en-neutral_clef-en-noun-o2N0yicF",
      "links": [
        [
          "music",
          "music"
        ],
        [
          "symbol",
          "symbol"
        ],
        [
          "pitchless",
          "pitchless"
        ],
        [
          "instrument",
          "instrument"
        ],
        [
          "percussion",
          "percussion"
        ],
        [
          "drum set",
          "drum set"
        ]
      ],
      "raw_glosses": [
        "(music) A symbol used for pitchless instruments, such as some of those used for percussion instruments, for which each line can represent a specific percussion instrument within a set, such as in a drum set."
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "word": "neutral clef"
}

{
  "forms": [
    {
      "form": "neutral clefs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "neutral clef (plural neutral clefs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Music"
      ],
      "glosses": [
        "A symbol used for pitchless instruments, such as some of those used for percussion instruments, for which each line can represent a specific percussion instrument within a set, such as in a drum set."
      ],
      "links": [
        [
          "music",
          "music"
        ],
        [
          "symbol",
          "symbol"
        ],
        [
          "pitchless",
          "pitchless"
        ],
        [
          "instrument",
          "instrument"
        ],
        [
          "percussion",
          "percussion"
        ],
        [
          "drum set",
          "drum set"
        ]
      ],
      "raw_glosses": [
        "(music) A symbol used for pitchless instruments, such as some of those used for percussion instruments, for which each line can represent a specific percussion instrument within a set, such as in a drum set."
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "word": "neutral clef"
}