"singing saw" meaning in English

{
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    {
      "args": {
        "1": "en",
        "2": "singing",
        "3": "saw"
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      "expansion": "singing + saw",
      "name": "compound"
    }
  ],
  "etymology_text": "From singing + saw, describing its song-like timbre.",
  "forms": [
    {
      "form": "singing saws",
      "tags": [
        "plural"
      ]
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  ],
  "head_templates": [
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      "args": {},
      "expansion": "singing saw (plural singing saws)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "Synonym of musical saw"
      ],
      "id": "en-singing_saw-en-noun-sAcf4QL~",
      "links": [
        [
          "musical saw",
          "musical saw#English"
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      "synonyms": [
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          "tags": [
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          "word": "musical saw"
        }
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    }
  ],
  "word": "singing saw"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "singing",
        "3": "saw"
      },
      "expansion": "singing + saw",
      "name": "compound"
    }
  ],
  "etymology_text": "From singing + saw, describing its song-like timbre.",
  "forms": [
    {
      "form": "singing saws",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "singing saw (plural singing saws)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of musical saw"
      ],
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          "musical saw#English"
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          "word": "musical saw"
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  ],
  "word": "singing saw"
}